NM vs Brazos River

NM and Brazos River both are nouns.

Word	Noun	Adjective	Verb	Adverb
NM	Yes	No	No	No
Brazos River	Yes	No	No	No

NM (noun)	Brazos River (noun)
a state in southwestern United States on the Mexican border	a river that rises in Mexico and flows across Texas into the Gulf of Mexico