Technical words are TERMS used to describe a specific field of knowledge or activity. They are often used in the context of technology, engineering, and science, but can also be used in other areas such as business and finance. The term 'technical words' is often used to refer to words that are not commonly used in everyday language. The five letter solutions for the crossword are jargon, lexis, lingo, slang, and vocab. Jargon refers to specialized language used by a particular group or profession. Lexis is the total vocabulary of a language. Lingo is a type of language used by a particular group or profession. Slang is informal language that is used by a particular group or profession. Vocab is the total number of words in a language.