bunk off vs vernacular

bunk off is not a noun while vernacular is a noun.

Word	Noun	Adjective	Verb	Adverb
bunk off	No	No	Yes	No
vernacular	Yes	Yes	No	No

bunk off (noun)	vernacular (noun)
	the everyday speech of the people (as distinguished from literary language)
	a characteristic language of a particular group (as among thieves)

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

bunk off (verb)	vernacular (verb)
play truant from work or school