dominion vs paramountcy

dominion and paramountcy both are nouns.

Word	Noun	Adjective	Verb	Adverb
dominion	Yes	No	No	No
paramountcy	Yes	No	No	No

As nouns, paramountcy is a hyponym of dominion; that is, paramountcy is a word with a more specific, narrower meaning than dominion:

Other hyponyms of dominion include raj, reign, sovereignty, suzerainty.

dominion (noun)	paramountcy (noun)
a region marked off for administrative or other purposes	the state of being paramount; the highest rank or authority
dominance or power through legal authority