import { Word } from '@/types';

// ─────────────────────────────────────────────────────────────────────────────
// EVERYDAY WORDS  (200 words across 16 categories)
// ─────────────────────────────────────────────────────────────────────────────
export const wordList: Word[] = [

  // ── Family (15) ─────────────────────────────────────────────────────────
  { id: 'fa01', word: 'mother',       category: 'Family', difficulty: 'easy',
    definition: 'The female parent of a child',
    example: 'My mother cooks a delicious dinner every evening.' },
  { id: 'fa02', word: 'father',       category: 'Family', difficulty: 'easy',
    definition: 'The male parent of a child',
    example: 'My father drives me to school every morning.' },
  { id: 'fa03', word: 'sister',       category: 'Family', difficulty: 'easy',
    definition: 'A girl who has the same parents as you',
    example: 'My sister and I share a bedroom.' },
  { id: 'fa04', word: 'brother',      category: 'Family', difficulty: 'easy',
    definition: 'A boy who has the same parents as you',
    example: 'My brother is two years older than me.' },
  { id: 'fa05', word: 'grandmother',  category: 'Family', difficulty: 'medium',
    definition: 'The mother of your mother or father',
    example: 'My grandmother makes the best apple cake.' },
  { id: 'fa06', word: 'grandfather',  category: 'Family', difficulty: 'medium',
    definition: 'The father of your mother or father',
    example: 'My grandfather tells wonderful old stories.' },
  { id: 'fa07', word: 'aunt',         category: 'Family', difficulty: 'easy',
    definition: 'The sister of your mother or father',
    example: 'My aunt lives in the next town.' },
  { id: 'fa08', word: 'uncle',        category: 'Family', difficulty: 'easy',
    definition: 'The brother of your mother or father',
    example: 'My uncle taught me how to ride a bicycle.' },
  { id: 'fa09', word: 'cousin',       category: 'Family', difficulty: 'easy',
    definition: 'The child of your aunt or uncle',
    example: 'My cousin visits us every summer holiday.' },
  { id: 'fa10', word: 'daughter',     category: 'Family', difficulty: 'medium',
    definition: 'A female child',
    example: 'She is the youngest daughter in the family.' },
  { id: 'fa11', word: 'son',          category: 'Family', difficulty: 'easy',
    definition: 'A male child',
    example: 'Their son started school this year.' },
  { id: 'fa12', word: 'husband',      category: 'Family', difficulty: 'medium',
    definition: 'The man that a woman is married to',
    example: 'Her husband is a very kind person.' },
  { id: 'fa13', word: 'wife',         category: 'Family', difficulty: 'easy',
    definition: 'The woman that a man is married to',
    example: 'His wife works as a nurse at the hospital.' },
  { id: 'fa14', word: 'baby',         category: 'Family', difficulty: 'easy',
    definition: 'A very young child who cannot walk yet',
    example: 'The baby smiled and clapped her hands.' },
  { id: 'fa15', word: 'family',       category: 'Family', difficulty: 'easy',
    definition: 'A group of people who are related to each other',
    example: 'We had a big family dinner on Sunday.' },

  // ── Home & Rooms (10) ───────────────────────────────────────────────────
  { id: 'hr01', word: 'kitchen',      category: 'Home & Rooms', difficulty: 'easy',
    definition: 'The room where you cook and prepare food',
    example: 'My mother is busy cooking in the kitchen.' },
  { id: 'hr02', word: 'bedroom',      category: 'Home & Rooms', difficulty: 'easy',
    definition: 'The room where you sleep',
    example: 'I keep all my books in my bedroom.' },
  { id: 'hr03', word: 'bathroom',     category: 'Home & Rooms', difficulty: 'easy',
    definition: 'The room with a bath, shower, and toilet',
    example: 'I brush my teeth in the bathroom every morning.' },
  { id: 'hr04', word: 'garden',       category: 'Home & Rooms', difficulty: 'easy',
    definition: 'An area of land outside a house where plants grow',
    example: 'We grow tomatoes and peppers in our garden.' },
  { id: 'hr05', word: 'house',        category: 'Home & Rooms', difficulty: 'easy',
    definition: 'A building where people live',
    example: 'We moved to a new house last summer.' },
  { id: 'hr06', word: 'hallway',      category: 'Home & Rooms', difficulty: 'medium',
    definition: 'A passage inside a house that leads to the other rooms',
    example: 'Please leave your shoes in the hallway.' },
  { id: 'hr07', word: 'garage',       category: 'Home & Rooms', difficulty: 'easy',
    definition: 'A building next to or under a house where you keep a car',
    example: 'Dad always parks the car in the garage.' },
  { id: 'hr08', word: 'balcony',      category: 'Home & Rooms', difficulty: 'medium',
    definition: 'A small platform outside an upper floor of a building',
    example: 'We eat breakfast on the balcony in summer.' },
  { id: 'hr09', word: 'lounge',       category: 'Home & Rooms', difficulty: 'medium',
    definition: 'The comfortable room where you sit, relax, and watch television',
    example: 'The whole family watches films in the lounge.' },
  { id: 'hr10', word: 'cellar',       category: 'Home & Rooms', difficulty: 'medium',
    definition: 'A room under a house, often used for storage',
    example: 'We keep old things and jars of jam in the cellar.' },

  // ── Objects (15) ────────────────────────────────────────────────────────
  { id: 'ob01', word: 'television',   category: 'Objects', difficulty: 'medium',
    definition: 'A screen that shows programmes, films, and news',
    example: 'We watch the news on television every evening.' },
  { id: 'ob02', word: 'telephone',    category: 'Objects', difficulty: 'medium',
    definition: 'A device you use to speak to someone far away',
    example: 'My grandmother called us on the telephone.' },
  { id: 'ob03', word: 'computer',     category: 'Objects', difficulty: 'medium',
    definition: 'An electronic machine for working and learning',
    example: 'I do my homework on the computer.' },
  { id: 'ob04', word: 'fridge',       category: 'Objects', difficulty: 'easy',
    definition: 'A machine that keeps food cold and fresh',
    example: 'Please put the milk back in the fridge.' },
  { id: 'ob05', word: 'microwave',    category: 'Objects', difficulty: 'hard',
    definition: 'A machine that heats food very quickly',
    example: 'I heated my soup in the microwave.' },
  { id: 'ob06', word: 'kettle',       category: 'Objects', difficulty: 'easy',
    definition: 'A container used to boil water for tea or coffee',
    example: 'Mum boiled the kettle to make tea.' },
  { id: 'ob07', word: 'clock',        category: 'Objects', difficulty: 'easy',
    definition: 'A device on the wall that shows the time',
    example: 'The clock on the wall says it is three o\'clock.' },
  { id: 'ob08', word: 'mirror',       category: 'Objects', difficulty: 'easy',
    definition: 'A flat glass surface you look into to see yourself',
    example: 'I checked my hair in the mirror before school.' },
  { id: 'ob09', word: 'lamp',         category: 'Objects', difficulty: 'easy',
    definition: 'A light you place on a table or desk',
    example: 'I read my book under the lamp before bed.' },
  { id: 'ob10', word: 'sofa',         category: 'Objects', difficulty: 'easy',
    definition: 'A long, soft seat where two or more people can sit',
    example: 'We all sat on the sofa to watch the film.' },
  { id: 'ob11', word: 'table',        category: 'Objects', difficulty: 'easy',
    definition: 'A piece of furniture with a flat top and legs',
    example: 'We eat our dinner together at the kitchen table.' },
  { id: 'ob12', word: 'chair',        category: 'Objects', difficulty: 'easy',
    definition: 'A piece of furniture with a back for one person to sit on',
    example: 'Pull up a chair and sit with us.' },
  { id: 'ob13', word: 'curtain',      category: 'Objects', difficulty: 'medium',
    definition: 'A piece of cloth that hangs in front of a window',
    example: 'She opened the curtains to let the sunlight in.' },
  { id: 'ob14', word: 'carpet',       category: 'Objects', difficulty: 'easy',
    definition: 'A thick soft covering for a floor',
    example: 'The carpet in our living room is dark red.' },
  { id: 'ob15', word: 'shelf',        category: 'Objects', difficulty: 'easy',
    definition: 'A flat board fixed to a wall for putting things on',
    example: 'My books are on the shelf above my desk.' },

  // ── Food & Drinks (20) ──────────────────────────────────────────────────
  { id: 'fd01', word: 'bread',        category: 'Food & Drinks', difficulty: 'easy',
    definition: 'A food made from flour and baked in an oven',
    example: 'We eat fresh bread with every meal.' },
  { id: 'fd02', word: 'milk',         category: 'Food & Drinks', difficulty: 'easy',
    definition: 'A white liquid that comes from cows',
    example: 'I drink a glass of cold milk every morning.' },
  { id: 'fd03', word: 'water',        category: 'Food & Drinks', difficulty: 'easy',
    definition: 'A clear liquid that all living things need to survive',
    example: 'Please give me a glass of water.' },
  { id: 'fd04', word: 'juice',        category: 'Food & Drinks', difficulty: 'easy',
    definition: 'A drink made by squeezing fruit',
    example: 'I had orange juice for breakfast.' },
  { id: 'fd05', word: 'coffee',       category: 'Food & Drinks', difficulty: 'easy',
    definition: 'A hot dark drink made from roasted coffee beans',
    example: 'My father drinks a cup of coffee every morning.' },
  { id: 'fd06', word: 'butter',       category: 'Food & Drinks', difficulty: 'easy',
    definition: 'A soft yellow food made from cream, spread on bread',
    example: 'I spread butter on my toast in the morning.' },
  { id: 'fd07', word: 'cheese',       category: 'Food & Drinks', difficulty: 'easy',
    definition: 'A solid food made from milk',
    example: 'I love cheese on my sandwiches.' },
  { id: 'fd08', word: 'egg',          category: 'Food & Drinks', difficulty: 'easy',
    definition: 'An oval object from a hen, cooked and eaten as food',
    example: 'We have boiled eggs for breakfast on Sundays.' },
  { id: 'fd09', word: 'apple',        category: 'Food & Drinks', difficulty: 'easy',
    definition: 'A round fruit that can be red, green, or yellow',
    example: 'I eat an apple every day after school.' },
  { id: 'fd10', word: 'banana',       category: 'Food & Drinks', difficulty: 'easy',
    definition: 'A long yellow fruit with a soft sweet inside',
    example: 'Monkeys love to eat bananas.' },
  { id: 'fd11', word: 'orange',       category: 'Food & Drinks', difficulty: 'easy',
    definition: 'A round juicy fruit with a bright orange skin',
    example: 'My mother peels an orange for me every day.' },
  { id: 'fd12', word: 'potato',       category: 'Food & Drinks', difficulty: 'easy',
    definition: 'A round vegetable that grows underground',
    example: 'We had mashed potato with our roast dinner.' },
  { id: 'fd13', word: 'tomato',       category: 'Food & Drinks', difficulty: 'easy',
    definition: 'A round red vegetable used in salads and sauces',
    example: 'I put a fresh tomato in my salad.' },
  { id: 'fd14', word: 'sugar',        category: 'Food & Drinks', difficulty: 'easy',
    definition: 'A sweet white substance used in food and drinks',
    example: 'I put one spoon of sugar in my tea.' },
  { id: 'fd15', word: 'salt',         category: 'Food & Drinks', difficulty: 'easy',
    definition: 'A white powder used to give flavour to food',
    example: 'Add a little salt to the soup.' },
  { id: 'fd16', word: 'rice',         category: 'Food & Drinks', difficulty: 'easy',
    definition: 'Small white grains cooked and eaten as food',
    example: 'We eat rice with chicken for dinner.' },
  { id: 'fd17', word: 'soup',         category: 'Food & Drinks', difficulty: 'easy',
    definition: 'A liquid food made by cooking vegetables or meat in water',
    example: 'My grandmother makes the most delicious tomato soup.' },
  { id: 'fd18', word: 'pasta',        category: 'Food & Drinks', difficulty: 'easy',
    definition: 'An Italian food made from flour and water, like spaghetti',
    example: 'We had pasta with tomato sauce for lunch today.' },
  { id: 'fd19', word: 'chocolate',    category: 'Food & Drinks', difficulty: 'medium',
    definition: 'A sweet brown food or drink made from cocoa',
    example: 'She bought a bar of chocolate at the shop.' },
  { id: 'fd20', word: 'yogurt',       category: 'Food & Drinks', difficulty: 'easy',
    definition: 'A thick creamy food made from milk',
    example: 'I eat yogurt with honey for breakfast.' },

  // ── School (12) ─────────────────────────────────────────────────────────
  { id: 'sc01', word: 'school',       category: 'School', difficulty: 'easy',
    definition: 'A place where children go to learn',
    example: 'I walk to school with my friend every morning.' },
  { id: 'sc02', word: 'teacher',      category: 'School', difficulty: 'easy',
    definition: 'A person who helps children learn at school',
    example: 'My teacher explains every lesson very clearly.' },
  { id: 'sc03', word: 'student',      category: 'School', difficulty: 'medium',
    definition: 'A person who is learning at school',
    example: 'Every student in my class got a gold star today.' },
  { id: 'sc04', word: 'pencil',       category: 'School', difficulty: 'easy',
    definition: 'A thin stick for writing, usually with a rubber at one end',
    example: 'I always sharpen my pencil before a test.' },
  { id: 'sc05', word: 'notebook',     category: 'School', difficulty: 'medium',
    definition: 'A book with blank pages for writing notes',
    example: 'Write the new vocabulary in your notebook.' },
  { id: 'sc06', word: 'classroom',    category: 'School', difficulty: 'medium',
    definition: 'The room in a school where lessons take place',
    example: 'Our classroom has a large whiteboard at the front.' },
  { id: 'sc07', word: 'homework',     category: 'School', difficulty: 'medium',
    definition: 'School work that you do at home in the evening',
    example: 'I always do my homework after dinner.' },
  { id: 'sc08', word: 'lesson',       category: 'School', difficulty: 'easy',
    definition: 'A period of time in school when you are taught something',
    example: 'My favourite lesson is English.' },
  { id: 'sc09', word: 'library',      category: 'School', difficulty: 'medium',
    definition: 'A room or building full of books to read or borrow',
    example: 'I found a great story book in the library.' },
  { id: 'sc10', word: 'dictionary',   category: 'School', difficulty: 'hard',
    definition: 'A book that explains the meaning of words',
    example: 'I look up new words in my dictionary.' },
  { id: 'sc11', word: 'blackboard',   category: 'School', difficulty: 'medium',
    definition: 'A dark board on the wall where teachers write with chalk',
    example: 'The teacher wrote all the new words on the blackboard.' },
  { id: 'sc12', word: 'calculator',   category: 'School', difficulty: 'hard',
    definition: 'A small machine used to do maths',
    example: 'We are not allowed to use a calculator in the test.' },

  // ── Body (15) ───────────────────────────────────────────────────────────
  { id: 'bo01', word: 'head',         category: 'Body', difficulty: 'easy',
    definition: 'The top part of your body, where your brain is',
    example: 'I wear a helmet to protect my head.' },
  { id: 'bo02', word: 'hair',         category: 'Body', difficulty: 'easy',
    definition: 'The thin threads that grow on top of your head',
    example: 'She has long dark hair.' },
  { id: 'bo03', word: 'eye',          category: 'Body', difficulty: 'easy',
    definition: 'The part of your body you use to see',
    example: 'He has blue eyes just like his father.' },
  { id: 'bo04', word: 'ear',          category: 'Body', difficulty: 'easy',
    definition: 'The part of your body you use to hear',
    example: 'Speak louder please, I cannot hear well.' },
  { id: 'bo05', word: 'nose',         category: 'Body', difficulty: 'easy',
    definition: 'The part of your face you use to smell and breathe',
    example: 'My nose is always cold in winter.' },
  { id: 'bo06', word: 'mouth',        category: 'Body', difficulty: 'easy',
    definition: 'The opening in your face that you use to eat and speak',
    example: 'Do not speak with your mouth full of food.' },
  { id: 'bo07', word: 'tooth',        category: 'Body', difficulty: 'easy',
    definition: 'One of the hard white objects inside your mouth',
    example: 'I brush every tooth carefully twice a day.' },
  { id: 'bo08', word: 'neck',         category: 'Body', difficulty: 'easy',
    definition: 'The part of your body connecting your head to your shoulders',
    example: 'She wore a beautiful necklace around her neck.' },
  { id: 'bo09', word: 'shoulder',     category: 'Body', difficulty: 'medium',
    definition: 'The joint where your arm connects to your body',
    example: 'I carried my heavy bag over my shoulder.' },
  { id: 'bo10', word: 'arm',          category: 'Body', difficulty: 'easy',
    definition: 'The long part of your body from shoulder to hand',
    example: 'He broke his arm when he fell off his bicycle.' },
  { id: 'bo11', word: 'hand',         category: 'Body', difficulty: 'easy',
    definition: 'The part at the end of your arm with five fingers',
    example: 'Please wash your hands before you eat.' },
  { id: 'bo12', word: 'finger',       category: 'Body', difficulty: 'easy',
    definition: 'One of the five long parts at the end of your hand',
    example: 'She hurt her finger while cutting the bread.' },
  { id: 'bo13', word: 'leg',          category: 'Body', difficulty: 'easy',
    definition: 'The long part of your body you use to stand and walk',
    example: 'The footballer hurt his leg during the match.' },
  { id: 'bo14', word: 'foot',         category: 'Body', difficulty: 'easy',
    definition: 'The part at the bottom of your leg that you stand on',
    example: 'I got sand between my toes on the beach.' },
  { id: 'bo15', word: 'knee',         category: 'Body', difficulty: 'easy',
    definition: 'The joint in the middle of your leg',
    example: 'I fell and hurt my knee on the playground.' },

  // ── Clothes (12) ────────────────────────────────────────────────────────
  { id: 'cl01', word: 'shirt',        category: 'Clothes', difficulty: 'easy',
    definition: 'A piece of clothing worn on the top half of your body',
    example: 'He wore a clean white shirt to the party.' },
  { id: 'cl02', word: 'trousers',     category: 'Clothes', difficulty: 'medium',
    definition: 'A piece of clothing that covers both of your legs',
    example: 'He put on his new blue trousers.' },
  { id: 'cl03', word: 'dress',        category: 'Clothes', difficulty: 'easy',
    definition: 'A piece of clothing worn by girls and women',
    example: 'She wore a beautiful red dress to the party.' },
  { id: 'cl04', word: 'shoes',        category: 'Clothes', difficulty: 'easy',
    definition: 'Hard coverings for your feet that you wear outside',
    example: 'Put your shoes on before going outside.' },
  { id: 'cl05', word: 'socks',        category: 'Clothes', difficulty: 'easy',
    definition: 'Soft coverings you wear on your feet, inside your shoes',
    example: 'I put on a clean pair of socks every morning.' },
  { id: 'cl06', word: 'jacket',       category: 'Clothes', difficulty: 'easy',
    definition: 'A short coat worn over your clothes',
    example: 'Wear your jacket — it is cold outside!' },
  { id: 'cl07', word: 'coat',         category: 'Clothes', difficulty: 'easy',
    definition: 'A long warm piece of clothing worn in winter',
    example: 'I put on my thick coat and scarf before going out.' },
  { id: 'cl08', word: 'hat',          category: 'Clothes', difficulty: 'easy',
    definition: 'A covering you wear on your head',
    example: 'She wore a big sun hat at the beach.' },
  { id: 'cl09', word: 'scarf',        category: 'Clothes', difficulty: 'easy',
    definition: 'A piece of cloth worn around your neck to keep you warm',
    example: 'I wrapped my scarf tightly around my neck.' },
  { id: 'cl10', word: 'belt',         category: 'Clothes', difficulty: 'easy',
    definition: 'A strip of leather or cloth worn around your waist',
    example: 'He put on a brown leather belt.' },
  { id: 'cl11', word: 'jumper',       category: 'Clothes', difficulty: 'easy',
    definition: 'A warm piece of clothing you pull over your head to wear',
    example: 'She put on her favourite blue jumper.' },
  { id: 'cl12', word: 'boots',        category: 'Clothes', difficulty: 'easy',
    definition: 'Strong shoes that also cover your ankles and lower leg',
    example: 'He put on his boots to go walking in the mud.' },

  // ── Colours (10) ────────────────────────────────────────────────────────
  { id: 'co01', word: 'red',          category: 'Colours', difficulty: 'easy',
    definition: 'The colour of blood and fire',
    example: 'She has a beautiful red rose in her garden.' },
  { id: 'co02', word: 'blue',         category: 'Colours', difficulty: 'easy',
    definition: 'The colour of a clear sky',
    example: 'The sea looks deep blue from the cliff.' },
  { id: 'co03', word: 'green',        category: 'Colours', difficulty: 'easy',
    definition: 'The colour of grass and leaves',
    example: 'The frog jumped into the green pond.' },
  { id: 'co04', word: 'yellow',       category: 'Colours', difficulty: 'easy',
    definition: 'The colour of the sun and bananas',
    example: 'She painted her front door bright yellow.' },
  { id: 'co05', word: 'white',        category: 'Colours', difficulty: 'easy',
    definition: 'The colour of snow and milk',
    example: 'The kitten has beautiful white fur.' },
  { id: 'co06', word: 'black',        category: 'Colours', difficulty: 'easy',
    definition: 'The very dark colour of the night sky',
    example: 'He wore a black hat and a black coat.' },
  { id: 'co07', word: 'purple',       category: 'Colours', difficulty: 'easy',
    definition: 'A colour that is a mix of red and blue',
    example: 'The queen wore a long purple dress.' },
  { id: 'co08', word: 'pink',         category: 'Colours', difficulty: 'easy',
    definition: 'A light red colour',
    example: 'The baby wore a cute pink hat.' },
  { id: 'co09', word: 'brown',        category: 'Colours', difficulty: 'easy',
    definition: 'The colour of earth and chocolate',
    example: 'He has warm brown eyes.' },
  { id: 'co10', word: 'grey',         category: 'Colours', difficulty: 'easy',
    definition: 'A colour between black and white',
    example: 'The sky was grey and cloudy all day.' },

  // ── Days & Time (14) ────────────────────────────────────────────────────
  { id: 'dt01', word: 'morning',      category: 'Days & Time', difficulty: 'easy',
    definition: 'The early part of the day, before midday',
    example: 'I eat breakfast every morning at seven o\'clock.' },
  { id: 'dt02', word: 'afternoon',    category: 'Days & Time', difficulty: 'medium',
    definition: 'The part of the day from midday until evening',
    example: 'We play football in the park on Sunday afternoon.' },
  { id: 'dt03', word: 'evening',      category: 'Days & Time', difficulty: 'easy',
    definition: 'The end of the day, after afternoon and before night',
    example: 'We have dinner together every evening.' },
  { id: 'dt04', word: 'night',        category: 'Days & Time', difficulty: 'easy',
    definition: 'The dark part of the day when most people sleep',
    example: 'The stars shine very brightly at night.' },
  { id: 'dt05', word: 'today',        category: 'Days & Time', difficulty: 'easy',
    definition: 'This current day',
    example: 'Today is Tuesday and we have English class.' },
  { id: 'dt06', word: 'tomorrow',     category: 'Days & Time', difficulty: 'medium',
    definition: 'The day after today',
    example: 'Tomorrow we will go to grandmother\'s house.' },
  { id: 'dt07', word: 'yesterday',    category: 'Days & Time', difficulty: 'medium',
    definition: 'The day before today',
    example: 'Yesterday I went to the park with my friends.' },
  { id: 'dt08', word: 'Monday',       category: 'Days & Time', difficulty: 'easy',
    definition: 'The first day of the school week',
    example: 'We have PE class on Monday morning.' },
  { id: 'dt09', word: 'Tuesday',      category: 'Days & Time', difficulty: 'medium',
    definition: 'The second day of the school week',
    example: 'I have piano lessons every Tuesday.' },
  { id: 'dt10', word: 'Wednesday',    category: 'Days & Time', difficulty: 'hard',
    definition: 'The middle day of the school week',
    example: 'Wednesday is the middle of the school week.' },
  { id: 'dt11', word: 'Thursday',     category: 'Days & Time', difficulty: 'medium',
    definition: 'The fourth day of the school week',
    example: 'We go swimming every Thursday afternoon.' },
  { id: 'dt12', word: 'Friday',       category: 'Days & Time', difficulty: 'easy',
    definition: 'The last day of the school week',
    example: 'Friday is my favourite day because the weekend starts.' },
  { id: 'dt13', word: 'Saturday',     category: 'Days & Time', difficulty: 'medium',
    definition: 'The first day of the weekend',
    example: 'On Saturday we visit our grandparents.' },
  { id: 'dt14', word: 'Sunday',       category: 'Days & Time', difficulty: 'easy',
    definition: 'The last day of the weekend',
    example: 'We go to church on Sunday morning.' },

  // ── Transport (10) ──────────────────────────────────────────────────────
  { id: 'tr01', word: 'car',          category: 'Transport', difficulty: 'easy',
    definition: 'A vehicle with four wheels and an engine for travelling',
    example: 'My father drives me to school by car.' },
  { id: 'tr02', word: 'bus',          category: 'Transport', difficulty: 'easy',
    definition: 'A large vehicle that carries many passengers',
    example: 'I take the bus to school every morning.' },
  { id: 'tr03', word: 'train',        category: 'Transport', difficulty: 'easy',
    definition: 'A vehicle that travels on rails and carries people',
    example: 'We took the train to visit the capital city.' },
  { id: 'tr04', word: 'bicycle',      category: 'Transport', difficulty: 'medium',
    definition: 'A vehicle with two wheels that you move with your feet',
    example: 'I ride my bicycle to the park on weekends.' },
  { id: 'tr05', word: 'aeroplane',    category: 'Transport', difficulty: 'hard',
    definition: 'A flying vehicle with wings that carries passengers',
    example: 'We took an aeroplane to go on holiday abroad.' },
  { id: 'tr06', word: 'taxi',         category: 'Transport', difficulty: 'easy',
    definition: 'A car you pay to drive you to a place',
    example: 'We called a taxi to take us to the airport.' },
  { id: 'tr07', word: 'boat',         category: 'Transport', difficulty: 'easy',
    definition: 'A vehicle that travels across water',
    example: 'We took a small boat across the lake.' },
  { id: 'tr08', word: 'helicopter',   category: 'Transport', difficulty: 'hard',
    definition: 'A flying vehicle with spinning blades on top',
    example: 'The doctor flew to the accident by helicopter.' },
  { id: 'tr09', word: 'motorcycle',   category: 'Transport', difficulty: 'hard',
    definition: 'A fast two-wheeled vehicle powered by an engine',
    example: 'My uncle rides a big red motorcycle.' },
  { id: 'tr10', word: 'truck',        category: 'Transport', difficulty: 'easy',
    definition: 'A large vehicle used to carry heavy loads',
    example: 'The big truck delivered goods to the shop.' },

  // ── Nature & Weather (15) ───────────────────────────────────────────────
  { id: 'nw01', word: 'sun',          category: 'Nature & Weather', difficulty: 'easy',
    definition: 'The large star that gives us light and heat during the day',
    example: 'The sun is very hot and bright in summer.' },
  { id: 'nw02', word: 'moon',         category: 'Nature & Weather', difficulty: 'easy',
    definition: 'The large round object that shines in the sky at night',
    example: 'The full moon lit up the whole garden.' },
  { id: 'nw03', word: 'star',         category: 'Nature & Weather', difficulty: 'easy',
    definition: 'A tiny bright light you can see in the sky at night',
    example: 'We counted the stars in the clear night sky.' },
  { id: 'nw04', word: 'sky',          category: 'Nature & Weather', difficulty: 'easy',
    definition: 'The space above the earth where clouds and birds are',
    example: 'The sky is beautifully blue today.' },
  { id: 'nw05', word: 'cloud',        category: 'Nature & Weather', difficulty: 'easy',
    definition: 'A white or grey mass of water vapour floating in the sky',
    example: 'Dark clouds appeared just before the storm.' },
  { id: 'nw06', word: 'rain',         category: 'Nature & Weather', difficulty: 'easy',
    definition: 'Water that falls from clouds in the sky',
    example: 'We could not play outside because of the rain.' },
  { id: 'nw07', word: 'snow',         category: 'Nature & Weather', difficulty: 'easy',
    definition: 'White frozen water that falls from the sky in winter',
    example: 'The children played in the snow all morning.' },
  { id: 'nw08', word: 'wind',         category: 'Nature & Weather', difficulty: 'easy',
    definition: 'Moving air that you can feel but not see',
    example: 'The strong wind blew my hat right off.' },
  { id: 'nw09', word: 'flower',       category: 'Nature & Weather', difficulty: 'easy',
    definition: 'The colourful part of a plant that bees love to visit',
    example: 'She picked a beautiful flower from the garden.' },
  { id: 'nw10', word: 'tree',         category: 'Nature & Weather', difficulty: 'easy',
    definition: 'A tall plant with a thick trunk, branches, and leaves',
    example: 'We climbed the big oak tree in the park.' },
  { id: 'nw11', word: 'river',        category: 'Nature & Weather', difficulty: 'easy',
    definition: 'A large flow of fresh water that moves through the land',
    example: 'Children swam in the cool river during the summer.' },
  { id: 'nw12', word: 'mountain',     category: 'Nature & Weather', difficulty: 'medium',
    definition: 'A very tall piece of land, much higher than a hill',
    example: 'We could see snow on top of the mountain.' },
  { id: 'nw13', word: 'sea',          category: 'Nature & Weather', difficulty: 'easy',
    definition: 'A very large area of salty water',
    example: 'We swam in the sea every day on holiday.' },
  { id: 'nw14', word: 'grass',        category: 'Nature & Weather', difficulty: 'easy',
    definition: 'Short green plants that cover fields and lawns',
    example: 'The cows ate the fresh green grass in the field.' },
  { id: 'nw15', word: 'forest',       category: 'Nature & Weather', difficulty: 'easy',
    definition: 'A large area with many trees growing close together',
    example: 'We walked through the forest looking for mushrooms.' },

  // ── Animals (15) ────────────────────────────────────────────────────────
  { id: 'an01', word: 'cat',          category: 'Animals', difficulty: 'easy',
    definition: 'A small furry animal kept as a pet',
    example: 'Our cat sleeps on the sofa every afternoon.' },
  { id: 'an02', word: 'dog',          category: 'Animals', difficulty: 'easy',
    definition: 'A popular furry animal kept as a pet',
    example: 'Our dog barks when strangers come to the door.' },
  { id: 'an03', word: 'bird',         category: 'Animals', difficulty: 'easy',
    definition: 'An animal with wings and feathers that can fly',
    example: 'A small bird sat on the branch outside my window.' },
  { id: 'an04', word: 'fish',         category: 'Animals', difficulty: 'easy',
    definition: 'An animal that lives in water and has fins',
    example: 'I have five fish in my tank at home.' },
  { id: 'an05', word: 'rabbit',       category: 'Animals', difficulty: 'easy',
    definition: 'A small furry animal with long ears',
    example: 'My rabbit eats carrots and hops around the garden.' },
  { id: 'an06', word: 'horse',        category: 'Animals', difficulty: 'easy',
    definition: 'A large animal that people ride',
    example: 'The girl rode the horse around the field.' },
  { id: 'an07', word: 'cow',          category: 'Animals', difficulty: 'easy',
    definition: 'A large farm animal that gives us milk',
    example: 'The cow ate grass in the field all day.' },
  { id: 'an08', word: 'pig',          category: 'Animals', difficulty: 'easy',
    definition: 'A round pink farm animal with a curly tail',
    example: 'The pig rolled happily in the mud.' },
  { id: 'an09', word: 'sheep',        category: 'Animals', difficulty: 'easy',
    definition: 'A woolly farm animal that gives us wool and meat',
    example: 'There were twenty sheep in the farmer\'s field.' },
  { id: 'an10', word: 'chicken',      category: 'Animals', difficulty: 'easy',
    definition: 'A farm bird kept for its eggs and meat',
    example: 'We keep three chickens in our back garden.' },
  { id: 'an11', word: 'snake',        category: 'Animals', difficulty: 'easy',
    definition: 'A long reptile without legs that slides on the ground',
    example: 'The snake moved slowly through the tall grass.' },
  { id: 'an12', word: 'frog',         category: 'Animals', difficulty: 'easy',
    definition: 'A small green animal that lives near water and can jump',
    example: 'The frog jumped off the rock into the pond.' },
  { id: 'an13', word: 'elephant',     category: 'Animals', difficulty: 'medium',
    definition: 'The largest land animal, with a long trunk',
    example: 'The elephant sprayed water with its trunk.' },
  { id: 'an14', word: 'lion',         category: 'Animals', difficulty: 'easy',
    definition: 'A large wild cat, often called the king of the jungle',
    example: 'The lion roared loudly in the night.' },
  { id: 'an15', word: 'tiger',        category: 'Animals', difficulty: 'easy',
    definition: 'A large wild cat with black and orange stripes',
    example: 'The tiger hid behind the trees to hunt.' },

  // ── Places in Town (10) ─────────────────────────────────────────────────
  { id: 'pt01', word: 'shop',         category: 'Places', difficulty: 'easy',
    definition: 'A place where you buy things',
    example: 'Mum went to the shop to buy bread and milk.' },
  { id: 'pt02', word: 'hospital',     category: 'Places', difficulty: 'medium',
    definition: 'A building where sick or injured people are treated',
    example: 'The doctor works at the big hospital in the city.' },
  { id: 'pt03', word: 'restaurant',   category: 'Places', difficulty: 'hard',
    definition: 'A place where you pay to eat meals cooked for you',
    example: 'We went to a restaurant for my birthday dinner.' },
  { id: 'pt04', word: 'park',         category: 'Places', difficulty: 'easy',
    definition: 'A public area with grass and trees where people relax',
    example: 'We play football in the park after school.' },
  { id: 'pt05', word: 'street',       category: 'Places', difficulty: 'easy',
    definition: 'A road in a town with houses or shops on each side',
    example: 'Our school is on the main street in the village.' },
  { id: 'pt06', word: 'market',       category: 'Places', difficulty: 'easy',
    definition: 'A place where people buy and sell food and goods',
    example: 'Grandma buys fresh vegetables at the market.' },
  { id: 'pt07', word: 'church',       category: 'Places', difficulty: 'easy',
    definition: 'A building where Christians go to pray',
    example: 'The old stone church in the village is very beautiful.' },
  { id: 'pt08', word: 'museum',       category: 'Places', difficulty: 'medium',
    definition: 'A place where important objects from history are displayed',
    example: 'We visited the history museum on our school trip.' },
  { id: 'pt09', word: 'hotel',        category: 'Places', difficulty: 'easy',
    definition: 'A building where you pay to stay and sleep when travelling',
    example: 'We stayed in a lovely hotel near the beach.' },
  { id: 'pt10', word: 'airport',      category: 'Places', difficulty: 'medium',
    definition: 'A place where aeroplanes take off and land',
    example: 'We arrived at the airport two hours before our flight.' },

  // ── Adjectives (10) ─────────────────────────────────────────────────────
  { id: 'aj01', word: 'big',          category: 'Adjectives', difficulty: 'easy',
    definition: 'Large in size',
    example: 'An elephant is a very big animal.' },
  { id: 'aj02', word: 'small',        category: 'Adjectives', difficulty: 'easy',
    definition: 'Little in size',
    example: 'The puppy was very small when we first got it.' },
  { id: 'aj03', word: 'tall',         category: 'Adjectives', difficulty: 'easy',
    definition: 'Having great height',
    example: 'My brother is very tall for his age.' },
  { id: 'aj04', word: 'short',        category: 'Adjectives', difficulty: 'easy',
    definition: 'Having little height',
    example: 'She is the shortest girl in our class.' },
  { id: 'aj05', word: 'happy',        category: 'Adjectives', difficulty: 'easy',
    definition: 'Feeling or showing joy',
    example: 'The children were happy on the last day of school.' },
  { id: 'aj06', word: 'sad',          category: 'Adjectives', difficulty: 'easy',
    definition: 'Feeling or showing unhappiness',
    example: 'She felt sad when her best friend moved away.' },
  { id: 'aj07', word: 'beautiful',    category: 'Adjectives', difficulty: 'medium',
    definition: 'Very pleasing to look at',
    example: 'What a beautiful rainbow in the sky!' },
  { id: 'aj08', word: 'clean',        category: 'Adjectives', difficulty: 'easy',
    definition: 'Free from dirt',
    example: 'Always keep your hands clean before eating.' },
  { id: 'aj09', word: 'dirty',        category: 'Adjectives', difficulty: 'easy',
    definition: 'Covered in mud, dust, or other marks',
    example: 'His boots were very dirty after the long walk.' },
  { id: 'aj10', word: 'tired',        category: 'Adjectives', difficulty: 'easy',
    definition: 'Feeling that you need sleep or rest',
    example: 'I was so tired that I fell asleep early.' },

  // ── Verbs (10) ──────────────────────────────────────────────────────────
  { id: 'vb01', word: 'read',         category: 'Verbs', difficulty: 'easy',
    definition: 'To look at words and understand them',
    example: 'I read a chapter of my book every night.' },
  { id: 'vb02', word: 'write',        category: 'Verbs', difficulty: 'easy',
    definition: 'To make words or letters on paper',
    example: 'Please write your name at the top of the page.' },
  { id: 'vb03', word: 'eat',          category: 'Verbs', difficulty: 'easy',
    definition: 'To put food in your mouth and swallow it',
    example: 'We eat lunch at school at noon every day.' },
  { id: 'vb04', word: 'drink',        category: 'Verbs', difficulty: 'easy',
    definition: 'To swallow a liquid',
    example: 'Remember to drink plenty of water every day.' },
  { id: 'vb05', word: 'sleep',        category: 'Verbs', difficulty: 'easy',
    definition: 'To rest with your eyes closed',
    example: 'Children need to sleep for at least nine hours.' },
  { id: 'vb06', word: 'walk',         category: 'Verbs', difficulty: 'easy',
    definition: 'To move by putting one foot in front of the other',
    example: 'I walk to school every morning with my sister.' },
  { id: 'vb07', word: 'run',          category: 'Verbs', difficulty: 'easy',
    definition: 'To move very fast on your feet',
    example: 'We run around the playground during break time.' },
  { id: 'vb08', word: 'play',         category: 'Verbs', difficulty: 'easy',
    definition: 'To do something enjoyable for fun',
    example: 'Let us play outside after school today.' },
  { id: 'vb09', word: 'watch',        category: 'Verbs', difficulty: 'easy',
    definition: 'To look at something carefully for a period of time',
    example: 'We watch a film together every Friday evening.' },
  { id: 'vb10', word: 'listen',       category: 'Verbs', difficulty: 'easy',
    definition: 'To pay attention to sounds or what someone is saying',
    example: 'Please listen carefully when the teacher is speaking.' },

  // ── Useful Words (7) ────────────────────────────────────────────────────
  { id: 'uw01', word: 'hello',        category: 'Useful Words', difficulty: 'easy',
    definition: 'A word used to greet someone',
    example: 'I said hello to my teacher in the morning.' },
  { id: 'uw02', word: 'goodbye',      category: 'Useful Words', difficulty: 'easy',
    definition: 'A word said when leaving or ending a conversation',
    example: 'She waved goodbye as the train slowly left.' },
  { id: 'uw03', word: 'please',       category: 'Useful Words', difficulty: 'easy',
    definition: 'A polite word used when asking for something',
    example: 'Please pass me the salt.' },
  { id: 'uw04', word: 'sorry',        category: 'Useful Words', difficulty: 'easy',
    definition: 'A word said when you have done something wrong',
    example: 'He said sorry for arriving late.' },
  { id: 'uw05', word: 'welcome',      category: 'Useful Words', difficulty: 'easy',
    definition: 'A word showing you are glad someone has arrived',
    example: 'Welcome to our school! We hope you enjoy it.' },
  { id: 'uw06', word: 'always',       category: 'Useful Words', difficulty: 'easy',
    definition: 'Every time, without exception',
    example: 'I always brush my teeth before going to bed.' },
  { id: 'uw07', word: 'never',        category: 'Useful Words', difficulty: 'easy',
    definition: 'Not at any time',
    example: 'I never forget to do my homework.' },
];

// ─────────────────────────────────────────────────────────────────────────────
// COUNTRIES & NATIONALITIES  (~70 words)
// ─────────────────────────────────────────────────────────────────────────────
export const countriesWordList: Word[] = [

  // ── Countries ────────────────────────────────────────────────────────────
  { id: 'cn01', word: 'England',      category: 'Countries', difficulty: 'easy',
    definition: 'A country in the United Kingdom, in the south of Great Britain',
    example: 'The capital city of England is London.' },
  { id: 'cn02', word: 'France',       category: 'Countries', difficulty: 'easy',
    definition: 'A large country in Western Europe, famous for the Eiffel Tower',
    example: 'The Eiffel Tower is in France.' },
  { id: 'cn03', word: 'Germany',      category: 'Countries', difficulty: 'medium',
    definition: 'A country in Central Europe, the largest in the European Union',
    example: 'Germany is famous for its fast motorways and good cars.' },
  { id: 'cn04', word: 'Spain',        category: 'Countries', difficulty: 'easy',
    definition: 'A country in south-west Europe with a warm, sunny climate',
    example: 'Many people go to Spain for holidays in the sun.' },
  { id: 'cn05', word: 'Italy',        category: 'Countries', difficulty: 'easy',
    definition: 'A country in southern Europe, shaped like a boot',
    example: 'Pizza and pasta come from Italy.' },
  { id: 'cn06', word: 'Greece',       category: 'Countries', difficulty: 'easy',
    definition: 'A country in south-east Europe with ancient history and beautiful islands',
    example: 'The ancient Olympics began in Greece.' },
  { id: 'cn07', word: 'Turkey',       category: 'Countries', difficulty: 'easy',
    definition: 'A country between Europe and Asia with a rich history',
    example: 'Istanbul is the biggest city in Turkey.' },
  { id: 'cn08', word: 'Russia',       category: 'Countries', difficulty: 'easy',
    definition: 'The largest country in the world, stretching across two continents',
    example: 'Russia is so big that it has eleven time zones.' },
  { id: 'cn09', word: 'America',      category: 'Countries', difficulty: 'medium',
    definition: 'A very large country in North America, also called the United States',
    example: 'New York is the most famous city in America.' },
  { id: 'cn10', word: 'Australia',    category: 'Countries', difficulty: 'medium',
    definition: 'A large country and continent in the Southern Hemisphere',
    example: 'Kangaroos and koalas live in Australia.' },
  { id: 'cn11', word: 'Brazil',       category: 'Countries', difficulty: 'easy',
    definition: 'The largest country in South America',
    example: 'Brazil is very famous for its football.' },
  { id: 'cn12', word: 'India',        category: 'Countries', difficulty: 'easy',
    definition: 'A very large country in South Asia with over a billion people',
    example: 'The Taj Mahal is one of the most famous buildings in India.' },
  { id: 'cn13', word: 'China',        category: 'Countries', difficulty: 'easy',
    definition: 'The most populated country in the world, in East Asia',
    example: 'The Great Wall is one of the wonders of China.' },
  { id: 'cn14', word: 'Japan',        category: 'Countries', difficulty: 'easy',
    definition: 'A country made up of islands in the Pacific Ocean',
    example: 'Japan is famous for sushi and technology.' },
  { id: 'cn15', word: 'Mexico',       category: 'Countries', difficulty: 'easy',
    definition: 'A country in southern North America, below the United States',
    example: 'Mexico City is one of the largest cities in the world.' },
  { id: 'cn16', word: 'Canada',       category: 'Countries', difficulty: 'easy',
    definition: 'The second largest country in the world, north of America',
    example: 'Canada is famous for its maple syrup and cold winters.' },
  { id: 'cn17', word: 'Egypt',        category: 'Countries', difficulty: 'easy',
    definition: 'A country in North Africa, famous for its ancient pyramids',
    example: 'The pyramids are one of the great wonders of Egypt.' },
  { id: 'cn18', word: 'Poland',       category: 'Countries', difficulty: 'easy',
    definition: 'A country in Central Europe, between Germany and Ukraine',
    example: 'Warsaw is the capital city of Poland.' },
  { id: 'cn19', word: 'Portugal',     category: 'Countries', difficulty: 'medium',
    definition: 'A country in south-west Europe on the Atlantic coast',
    example: 'Portugal is famous for its food and warm weather.' },
  { id: 'cn20', word: 'Sweden',       category: 'Countries', difficulty: 'easy',
    definition: 'A Nordic country in northern Europe, known for cold winters',
    example: 'Sweden is famous for IKEA and ABBA.' },
  { id: 'cn21', word: 'Norway',       category: 'Countries', difficulty: 'easy',
    definition: 'A Nordic country in northern Europe with spectacular fjords',
    example: 'Norway has some of the most beautiful mountains in Europe.' },
  { id: 'cn22', word: 'Switzerland',  category: 'Countries', difficulty: 'hard',
    definition: 'A small country in Central Europe, famous for mountains and chocolate',
    example: 'Switzerland is famous for its cheese, chocolate, and watches.' },
  { id: 'cn23', word: 'Austria',      category: 'Countries', difficulty: 'medium',
    definition: 'A country in Central Europe, known for classical music and mountains',
    example: 'Vienna is the beautiful capital city of Austria.' },
  { id: 'cn24', word: 'Hungary',      category: 'Countries', difficulty: 'medium',
    definition: 'A country in Central Europe with Budapest as its capital',
    example: 'Hungary is a neighbour of Romania and Slovakia.' },
  { id: 'cn25', word: 'Romania',      category: 'Countries', difficulty: 'medium',
    definition: 'A country in south-east Europe, on the Black Sea',
    example: 'Transylvania is a famous region in Romania.' },
  { id: 'cn26', word: 'Bulgaria',     category: 'Countries', difficulty: 'medium',
    definition: 'A country in south-east Europe, on the Balkan Peninsula',
    example: 'Sofia is the capital and largest city of Bulgaria.' },
  { id: 'cn27', word: 'Serbia',       category: 'Countries', difficulty: 'easy',
    definition: 'A country in south-east Europe, a neighbour of Macedonia',
    example: 'Belgrade is the capital city of Serbia.' },
  { id: 'cn28', word: 'Croatia',      category: 'Countries', difficulty: 'medium',
    definition: 'A country in south-east Europe on the Adriatic Sea',
    example: 'Croatia has beautiful beaches on the Adriatic coast.' },
  { id: 'cn29', word: 'Albania',      category: 'Countries', difficulty: 'medium',
    definition: 'A small country in south-east Europe, on the Adriatic Sea',
    example: 'Tirana is the capital city of Albania.' },
  { id: 'cn30', word: 'Macedonia',    category: 'Countries', difficulty: 'hard',
    definition: 'A small country in the heart of the Balkans in south-east Europe',
    example: 'Skopje is the capital city of Macedonia.' },
  { id: 'cn31', word: 'Ukraine',      category: 'Countries', difficulty: 'medium',
    definition: 'A large country in Eastern Europe',
    example: 'Kyiv is the capital and largest city of Ukraine.' },
  { id: 'cn32', word: 'Ireland',      category: 'Countries', difficulty: 'medium',
    definition: 'An island country in north-west Europe, known for green fields',
    example: 'Ireland is often called the Emerald Isle.' },
  { id: 'cn33', word: 'Netherlands',  category: 'Countries', difficulty: 'hard',
    definition: 'A country in Western Europe, famous for windmills and tulips',
    example: 'Amsterdam is the capital city of the Netherlands.' },
  { id: 'cn34', word: 'Belgium',      category: 'Countries', difficulty: 'medium',
    definition: 'A small country in Western Europe, between France and Germany',
    example: 'Belgium is famous for its chocolate and waffles.' },
  { id: 'cn35', word: 'Denmark',      category: 'Countries', difficulty: 'medium',
    definition: 'A Nordic country in northern Europe',
    example: 'LEGO was invented in Denmark.' },

  // ── Nationalities ────────────────────────────────────────────────────────
  { id: 'na01', word: 'English',      category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from England',
    example: 'English food is famous for fish and chips.' },
  { id: 'na02', word: 'French',       category: 'Nationalities', difficulty: 'easy',
    definition: 'Describing a person or thing from France',
    example: 'French bread is called a baguette.' },
  { id: 'na03', word: 'German',       category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from Germany',
    example: 'German cars are famous all around the world.' },
  { id: 'na04', word: 'Spanish',      category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from Spain',
    example: 'Spanish food includes paella and tapas.' },
  { id: 'na05', word: 'Italian',      category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from Italy',
    example: 'Italian pasta is eaten all over the world.' },
  { id: 'na06', word: 'Greek',        category: 'Nationalities', difficulty: 'easy',
    definition: 'Describing a person or thing from Greece',
    example: 'Greek yogurt is thick and very creamy.' },
  { id: 'na07', word: 'Turkish',      category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from Turkey',
    example: 'Turkish tea is drunk from small glasses.' },
  { id: 'na08', word: 'Russian',      category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from Russia',
    example: 'Russian winters are extremely cold.' },
  { id: 'na09', word: 'American',     category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from America',
    example: 'American films are popular all over the world.' },
  { id: 'na10', word: 'Australian',   category: 'Nationalities', difficulty: 'hard',
    definition: 'Describing a person or thing from Australia',
    example: 'Australian beaches are beautiful and sunny.' },
  { id: 'na11', word: 'Brazilian',    category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from Brazil',
    example: 'Brazilian football players are very skillful.' },
  { id: 'na12', word: 'Indian',       category: 'Nationalities', difficulty: 'easy',
    definition: 'Describing a person or thing from India',
    example: 'Indian food uses many colourful spices.' },
  { id: 'na13', word: 'Chinese',      category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from China',
    example: 'Chinese writing uses thousands of different characters.' },
  { id: 'na14', word: 'Japanese',     category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from Japan',
    example: 'Japanese technology is very advanced.' },
  { id: 'na15', word: 'Mexican',      category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from Mexico',
    example: 'Mexican food is spicy and very tasty.' },
  { id: 'na16', word: 'Canadian',     category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from Canada',
    example: 'Canadian winters can be very long and cold.' },
  { id: 'na17', word: 'Egyptian',     category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from Egypt',
    example: 'Egyptian pyramids are thousands of years old.' },
  { id: 'na18', word: 'Polish',       category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from Poland',
    example: 'Polish bread is very tasty and comes in many varieties.' },
  { id: 'na19', word: 'Portuguese',   category: 'Nationalities', difficulty: 'hard',
    definition: 'Describing a person or thing from Portugal',
    example: 'Portuguese explorers sailed around the world.' },
  { id: 'na20', word: 'Swedish',      category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from Sweden',
    example: 'Swedish furniture is known for its simple design.' },
  { id: 'na21', word: 'Norwegian',    category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from Norway',
    example: 'Norwegian salmon is famous all over the world.' },
  { id: 'na22', word: 'Swiss',        category: 'Nationalities', difficulty: 'easy',
    definition: 'Describing a person or thing from Switzerland',
    example: 'Swiss chocolate is considered the best in the world.' },
  { id: 'na23', word: 'Austrian',     category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from Austria',
    example: 'Austrian music, like Mozart\'s, is world-famous.' },
  { id: 'na24', word: 'Hungarian',    category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from Hungary',
    example: 'Hungarian goulash is a delicious and warming dish.' },
  { id: 'na25', word: 'Romanian',     category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from Romania',
    example: 'Romanian castles are famous for their beautiful architecture.' },
  { id: 'na26', word: 'Bulgarian',    category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from Bulgaria',
    example: 'Bulgarian yogurt is very thick and creamy.' },
  { id: 'na27', word: 'Serbian',      category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from Serbia',
    example: 'Serbian food is similar to Macedonian food.' },
  { id: 'na28', word: 'Croatian',     category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from Croatia',
    example: 'Croatian beaches are famous all over Europe.' },
  { id: 'na29', word: 'Albanian',     category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from Albania',
    example: 'Albanian mountains are very tall and beautiful.' },
  { id: 'na30', word: 'Macedonian',   category: 'Nationalities', difficulty: 'hard',
    definition: 'Describing a person or thing from Macedonia',
    example: 'Macedonian ajvar is a delicious pepper spread.' },
  { id: 'na31', word: 'Ukrainian',    category: 'Nationalities', difficulty: 'hard',
    definition: 'Describing a person or thing from Ukraine',
    example: 'Ukrainian traditional embroidery is very colourful.' },
  { id: 'na32', word: 'Irish',        category: 'Nationalities', difficulty: 'easy',
    definition: 'Describing a person or thing from Ireland',
    example: 'Irish people are known for being very friendly.' },
  { id: 'na33', word: 'Dutch',        category: 'Nationalities', difficulty: 'easy',
    definition: 'Describing a person or thing from the Netherlands',
    example: 'Dutch people are famous for riding bicycles.' },
  { id: 'na34', word: 'Belgian',      category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from Belgium',
    example: 'Belgian chocolate and Belgian waffles are world-famous.' },
  { id: 'na35', word: 'Danish',       category: 'Nationalities', difficulty: 'medium',
    definition: 'Describing a person or thing from Denmark',
    example: 'Danish pastries are eaten for breakfast all over the world.' },
];

// ── Helpers ──────────────────────────────────────────────────────────────────
export const everydayCategories = [...new Set(wordList.map(w => w.category))];
export const countriesCategories = [...new Set(countriesWordList.map(w => w.category))];

// backwards-compat alias used by the progress page
export const categories = everydayCategories;