jargon

noun jargon

• terminology — the system of terms belonging or peculiar to a science, art, or specialized subject; nomenclature: the terminology of botany.
• slang — a specialized dictionary covering the words, phrases, and idioms that reflect the least formal speech of a language. These terms are often metaphorical and playful, and are likely to be evanescent as the spoken language changes from one generation to another. Much slang belongs to specific groups, as the jargon of a particular class, profession, or age group. Some is vulgar. Some slang terms have staying power as slang, but others make a transition into common informal speech, and then into the standard language. An online slang dictionary, such as the Dictionary.com Slang Dictionary, provides immediate information about the meaning and history of a queried term and its appropriateness or lack of appropriateness in a range of social and professional circumstances.
• lingo — the language and speech, especially the jargon, slang, or argot, of a particular field, group, or individual: gamblers' lingo.
• argot — An argot is a special language used by a particular group of people, which other people find difficult to understand.
• language — a body of words and the systems for their use common to a people who are of the same community or nation, the same geographical area, or the same cultural tradition: the two languages of Belgium; a Bantu language; the French language; the Yiddish language.