vernacular vs bun-fight

vernacular and bun-fight both are nouns.

Word	Noun	Adjective	Verb	Adverb
vernacular	Yes	Yes	No	No
bun-fight	Yes	No	No	No

vernacular (noun)	bun-fight (noun)
the everyday speech of the people (as distinguished from literary language)	(Briticism) a grand formal party on an important occasion
a characteristic language of a particular group (as among thieves)

vernacular (adjective)	bun-fight (adjective)
being or characteristic of or appropriate to everyday language