political entity vs social unit

political entity and social unit both are nouns.

Word	Noun	Adjective	Verb	Adverb
political entity	Yes	No	No	No
social unit	Yes	No	No	No

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

Other hypernyms of political entity include unit.

political entity (noun)	social unit (noun)
a unit with political responsibilities	an organization regarded as part of a larger social group