NM vs Colorado Plateau

NM and Colorado Plateau both are nouns.

Word	Noun	Adjective	Verb	Adverb
NM	Yes	No	No	No
Colorado Plateau	Yes	No	No	No

NM (noun)	Colorado Plateau (noun)
a state in southwestern United States on the Mexican border	a large plateau to the south and west of the Rocky Mountains; abuts mountains on the north and east and ends in an escarpment overlooking lowlands to the south and west; the Grand Canyon is carved out of the southwestern corner