Taconic Mountains vs N.Y.

Taconic Mountains and N.Y. both are nouns.

Word	Noun	Adjective	Verb	Adverb
Taconic Mountains	Yes	No	No	No
N.Y.	Yes	No	No	No

Taconic Mountains (noun)	N.Y. (noun)
a range of the Appalachian Mountains along the eastern border of New York with Connecticut, Massachusetts, and Vermont	a Mid-Atlantic state; one of the original 13 colonies, with capital Albany