• Prefixes • Suffixes • Compound words, ex: telephone number, bookshop • Collocation (words that occur together), ex: black tea, heavy rain • Idioms are a kind of fixed expression as they can’t be changed • Synonyms (words with the same or similar meanings) • Antonyms (words with opposite meanings), • Lexical sets (groups of words that belong to the same topic area), ex: family, furniture, food. • Word family, ex: real, really, realistic, unreal • False friends (they are words which have the same of a similar form in two languages but a different meaning) • Homophones (words with the same pronunciation but different meaning or spelling) • Homonyms (words with the same spelling but different meaning) • Varieties of English