arse vs vernacular

arse and vernacular both are nouns.

Word	Noun	Adjective	Verb	Adverb
arse	Yes	No	No	No
vernacular	Yes	Yes	No	No

arse (noun)	vernacular (noun)
vulgar slang for anus	the everyday speech of the people (as distinguished from literary language)
the fleshy part of the human body that you sit on	a characteristic language of a particular group (as among thieves)

arse (adjective)	vernacular (adjective)
	being or characteristic of or appropriate to everyday language