patois vs slam-bang

patois is a noun but slam-bang is not a noun.

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

patois (noun)	slam-bang (noun)
a regional dialect of a language (especially French); usually considered substandard
a characteristic language of a particular group (as among thieves)

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

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