slam-bang vs vernacular

slam-bang is not a noun while vernacular is a noun.

Word	Noun	Adjective	Verb	Adverb
slam-bang	No	Yes	No	Yes
vernacular	Yes	Yes	No	No

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

slam-bang (adjective)	vernacular (adjective)
violent and sudden and noisy	being or characteristic of or appropriate to everyday language

slam-bang (adverb)	vernacular (adverb)
in a violent or sudden or noisy manner
with heedless speed
in a careless or reckless manner