mob vs gang

mob and gang both are nouns.

Word	Noun	Adjective	Verb	Adverb
mob	Yes	No	Yes	No
gang	Yes	No	Yes	No

As nouns, mob and gang are synonyms defined as:

Other synonyms of mob include pack, ring.

mob (noun)	gang (noun)
a disorderly crowd of people	tool consisting of a combination of implements arranged to work together
an association of criminals	an organized group of workmen
a loose affiliation of gangsters in charge of organized criminal activities	an association of criminals
	an informal body of friends

mob (verb)	gang (verb)
press tightly together or cram	act as an organized group