patois vs street name

patois and street name both are nouns.

Word	Noun	Adjective	Verb	Adverb
patois	Yes	No	No	No
street name	Yes	No	No	No

As nouns, street name is a hyponym of patois; that is, street name is a word with a more specific, narrower meaning than patois:

Other hyponyms of patois include rhyming slang.

patois (noun)	street name (noun)
a regional dialect of a language (especially French); usually considered substandard	the name of a street
a characteristic language of a particular group (as among thieves)	the name of a brokerage firm in which stock is held on behalf of a customer
	slang for something (especially for an illegal drug)
	an alternative name that a person chooses or is given (especially in inner city neighborhoods)