patois vs old man

patois and old man both are nouns.

Word	Noun	Adjective	Verb	Adverb
patois	Yes	No	No	No
old man	Yes	No	No	No

patois (noun)	old man (noun)
a regional dialect of a language (especially French); usually considered substandard	an informal term for your father
a characteristic language of a particular group (as among thieves)	a man who is very old
	a familiar term of address for a man
	(slang) boss
	aromatic herb of temperate Eurasia and North Africa having a bitter taste used in making the liqueur absinthe