vernacular
adjective
definition 1: spoken by the native or common people of a region or country.
example: The vernacular form of the language differed a good deal from the officially recognized form.
definition 2: of, relating to, or spoken or written in the common, everyday language of a people or region.
example: Vernacular poetry appealed to her young pupil more than the classical verses she’d tried to interest him in.
noun
definition: the language spoken by the native or common people in a region or country, esp. as opposed to a literary or official language.
example: The Renaissance saw the beginnings of the use of the vernacular in literary writings.