scout troop vs social unit

scout troop and social unit both are nouns.

Word	Noun	Adjective	Verb	Adverb
scout troop	Yes	No	No	No
social unit	Yes	No	No	No

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

Other hypernyms of scout troop include unit.

scout troop (noun)	social unit (noun)
a unit of Girl or Boy Scouts	an organization regarded as part of a larger social group