Dominion vs body politic

Dominion and body politic both are nouns.

Word	Noun	Adjective	Verb	Adverb
Dominion	Yes	No	No	No
body politic	Yes	No	No	No

As nouns, body politic is a hypernym of Dominion; that is, body politic is a word with a broader meaning than Dominion:

Dominion: one of the self-governing nations in the British Commonwealth
body politic: a politically organized body of people under a single government

Other hypernyms of Dominion include commonwealth, country, land, nation, res publica, state.

Dominion (noun)	body politic (noun)
one of the self-governing nations in the British Commonwealth	a politically organized body of people under a single government