territorial dominion vs Northern Marianas

territorial dominion and Northern Marianas both are nouns.

Word	Noun	Adjective	Verb	Adverb
territorial dominion	Yes	No	No	No
Northern Marianas	Yes	No	No	No

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