What is collocation? Collocation is ‘a predictable combination of words‘ for example we can say heavy rain but not strong rain because it does not sound right’ likewise, we can say ‘do exercise’ but not ‘make exercise’. Collocations can be made up of any kinds of words such as verbs, nouns, adverbs and adjectives. There are no rules for collocations in English Language, they are just combinations of words that we can become familiar with and then use correctly.