French language vs patois

French language and patois both are nouns.

Word	Noun	Adjective	Verb	Adverb
French language	Yes	No	No	No
patois	Yes	No	No	No

French language (noun)	patois (noun)
the Romance language spoken in France and in countries colonized by France	a regional dialect of a language (especially French); usually considered substandard
	a characteristic language of a particular group (as among thieves)