Binomials are two words used together to form a phrase or expression that serves as a single unit of meaning. There are a number of synonyms for binomials, including "coordinate phrases," "paired words," "lexical bundles," and "collocations." These terms all refer to the same basic idea of two words being used together in a particular way to convey a specific meaning or idea. Binomials can be found in many different areas of language and can be used in both formal and informal contexts. Whatever you call them, binomials are a useful and ubiquitous part of language that help us to communicate more effectively.