squad vs social unit

squad and social unit both are nouns.

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

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

Other hypernyms of squad include unit.

squad (noun)	social unit (noun)
a cooperative unit (especially in sports)	an organization regarded as part of a larger social group
a smallest army unit
a small squad of policemen trained to deal with a particular kind of crime