gang vs social unit

gang and social unit both are nouns.

Word	Noun	Adjective	Verb	Adverb
gang	Yes	No	Yes	No
social unit	Yes	No	No	No

As nouns, social unit is a hypernym of gang; that is, social unit is a word with a broader meaning than gang:

Other hypernyms of gang include unit.

gang (noun)	social unit (noun)
tool consisting of a combination of implements arranged to work together	an organization regarded as part of a larger social group
an organized group of workmen
an association of criminals
an informal body of friends

gang (verb)	social unit (verb)
act as an organized group