New York City vs N.Y.

New York City and N.Y. both are nouns.

Word	Noun	Adjective	Verb	Adverb
New York City	Yes	No	No	No
N.Y.	Yes	No	No	No

New York City (noun)	N.Y. (noun)
the largest city in New York State and in the United States; located in southeastern New York at the mouth of the Hudson river; a major financial and cultural center	a Mid-Atlantic state; one of the original 13 colonies, with capital Albany