slam-bang vs slang

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

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

slam-bang (noun)	slang (noun)
	a characteristic language of a particular group (as among thieves)
	informal language consisting of words and expressions that are not considered appropriate for formal occasions; often vituperative or vulgar

slam-bang (adjective)	slang (adjective)
violent and sudden and noisy

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