street name vs argot

street name and argot both are nouns.

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

As nouns, argot is a hypernym of street name; that is, argot is a word with a broader meaning than street name:

Other hypernyms of street name include name, cant, jargon, lingo, patois, slang, vernacular.

street name (noun)	argot (noun)
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)