territorial dominion vs territory

territorial dominion and territory both are nouns.

Word	Noun	Adjective	Verb	Adverb
territorial dominion	Yes	No	No	No
territory	Yes	No	No	No

As nouns, territorial dominion and territory are synonyms defined as:

territorial dominion and territory: a region marked off for administrative or other purposes

Other synonyms of territorial dominion include district, dominion.

territorial dominion (noun)	territory (noun)
a region marked off for administrative or other purposes	an area of knowledge or interest
	a region marked off for administrative or other purposes
	the geographical area under the jurisdiction of a sovereign state