Collocations are combinations of words that frequently occur together in a language. They sound natural to native speakers and can include pairs or groups of words, such as "make a decision" or "strong coffee." Understanding collocations helps learners use language more fluently and accurately. These word combinations can be categorized into different types, such as verb-noun collocations (e.g., take a break), adjective-noun collocations (e.g., heavy rain), and adverb-adjective collocations (e.g., deeply concerned). Mastering collocations enhances vocabulary and improves overall communication skills in English and other languages.