territorial dominion vs Northern Mariana Islands

territorial dominion and Northern Mariana Islands both are nouns.

Word	Noun	Adjective	Verb	Adverb
territorial dominion	Yes	No	No	No
Northern Mariana Islands	Yes	No	No	No

territorial dominion (noun)	Northern Mariana Islands (noun)
a region marked off for administrative or other purposes	a self-governing territory comprising all of the Mariana Islands except Guam