Vocabulary: More than 20000 English words, categorized into different lessons based on their level or topic. Vocabulary lesson includes: - CEFR Wordlist: including A1, A2, B1, B2, C1 wordlists - Topic Vocabulary: including words related to topics like animals, appearance, body, colors and shapes, clothes and fashion, etc. - IELTS Test Preparation: Including vocabulary needed for both academic and general training IELTS exam - TOEFL Test Preparation: Including vocabulary needed for TOEFL exam - SAT Test Preparation: Including essential SAT words categorized into 6 books Most words use both example and pictures to help learners learn faster and easier. Features like flashcard and vocabulary quiz help learners assess their progress.