team vs social unit

team and social unit both are nouns.

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

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

Other hypernyms of team include unit.

team (noun)	social unit (noun)
a cooperative unit (especially in sports)	an organization regarded as part of a larger social group
two or more draft animals that work together to pull something

team (verb)	social unit (verb)
form a team