Dominion vs country

Dominion and country both are nouns.

Word	Noun	Adjective	Verb	Adverb
Dominion	Yes	No	No	No
country	Yes	No	No	No

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

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

Dominion (noun)	country (noun)
one of the self-governing nations in the British Commonwealth	a politically organized body of people under a single government
	the people who live in a nation or country
	the territory occupied by a nation
	an area outside of cities and towns
	a particular geographical region of indefinite boundary (usually serving some special purpose or distinguished by its people or culture or geography)