Local phraseology is a term used to describe the language and expressions that are unique to a particular region or culture. IDIOM and LINGO are two words that are often used interchangeably to refer to local phraseology. An IDIOM is an expression that has a figurative meaning, while LINGO is a specialized vocabulary used by a particular group of people. Both terms are used to describe the language and expressions that are specific to a certain area or culture.