In English grammar, the concept of a “pair of words” refers to a specific linguistic phenomenon where two words are closely related and often used together to convey a particular meaning or idea. These word pairs are sometimes called “collocations” or “lexical bundles.” They can include combinations like “salt and pepper,” “black and white,” or “bread and butter.” Understanding and using these pairs correctly is essential for effective communication in English, as they contribute to the natural flow of language and help convey precise meanings. First-year English grammar courses often introduce students to common pairs of words to improve their language skills and fluency, enhancing their ability to express ideas accurately and fluently in both spoken and written communication.