vernacular
noun
°The language of a people, a national language.
"''The vernacular of the United States is English."
°Everyday speech, including colloquialisms, as opposed to literary or liturgical language.
"Street vernacular can be quite different from what is heard elsewhere."
adjective
°Of or pertaining to everyday language.
synonyms: argot, jargon, slang, common more» , everyday, indigenous, ordinary, vulgar