patois vs plumb

patois and plumb both are nouns.

Word	Noun	Adjective	Verb	Adverb
patois	Yes	No	No	No
plumb	Yes	Yes	Yes	Yes

patois (noun)	plumb (noun)
a regional dialect of a language (especially French); usually considered substandard	the metal bob of a plumb line
a characteristic language of a particular group (as among thieves)

patois (adjective)	plumb (adjective)
	exactly vertical

patois (verb)	plumb (verb)
	adjust with a plumb line so as to make vertical
	measure the depth of something
	examine thoroughly and in great depth
	weight with lead

patois (adverb)	plumb (adverb)
	conforming to the direction of a plumb line
	exactly
	completely; used as intensifiers