Lexis is a term that refers to the vocabulary or word choices used in language. There are many synonyms for the word lexis, including diction, terminology, lingo, jargon, language, vocabulary, phraseology, idiom, and expressions. Each of these synonyms highlights a slightly different aspect of the language used. For instance, diction refers to the choice and arrangement of words, while terminology is specific to a particular field or topic. Jargon, on the other hand, is used only within a particular group of people who share a common interest or profession. Regardless of which synonym is used, they all refer to the words we use to communicate our thoughts and ideas to others.