gang vs bunch

gang and bunch both are nouns.

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

As nouns, gang and bunch are synonyms defined as:

Other synonyms of gang include crew, crowd.

gang (noun)	bunch (noun)
tool consisting of a combination of implements arranged to work together	a grouping of a number of similar things
an organized group of workmen	an informal body of friends
an association of criminals	any collection in its entirety
an informal body of friends

gang (verb)	bunch (verb)
act as an organized group	gather or cause to gather into a cluster
	form into a bunch