Local idiom is the way of speaking that is unique to a particular region or locality. Synonyms for this term include vernacular, slang, dialect, patois, lingo, and jargon. Vernacular refers to the common language or dialect spoken by people in a particular region. Slang, on the other hand, is informal language used by a specific group of people. Patois is a dialect spoken by a particular group of people that is not the official language of a country. Lingo refers to specialized vocabulary used by a particular group, while jargon is the technical terminology used in a certain field. All these terms denote the various ways of speaking that are unique to a particular region and community.