Insider's Lingo is a term used to describe the specialized language and expressions used by a particular group or profession. JARGON is a type of insider's lingo that is used to refer to technical terms and phrases, while ARGOT is a type of insider's lingo that is used to refer to informal words and phrases. Both JARGON and ARGOT are used to create a sense of belonging and exclusivity among members of a particular group or profession.