Context clues provide additional information that helps readers understand the meaning of unfamiliar words or phrases in a text. There are several types of context clues, including synonyms, definitions, antonyms, and additional context or details. Synonyms are words with similar meanings, while definitions directly explain the word's meaning. Antonyms provide the opposite meaning to infer the word. Additional context gives broader details or examples to help the reader understand the tricky word or phrase. Understanding these different types of context clues can help readers comprehend the full meaning when encountering unfamiliar language.