Guadalupe Mountains vs NM

Guadalupe Mountains and NM both are nouns.

Word	Noun	Adjective	Verb	Adverb
Guadalupe Mountains	Yes	No	No	No
NM	Yes	No	No	No

Guadalupe Mountains (noun)	NM (noun)
a mountain range in southern New Mexico and western Texas; the southern extension of the Sacramento Mountains	a state in southwestern United States on the Mexican border