NY vs New York State

NY and New York State both are nouns.

Word	Noun	Adjective	Verb	Adverb
NY	Yes	No	No	No
New York State	Yes	No	No	No

As nouns, NY and New York State are synonyms defined as:

NY and New York State: a Mid-Atlantic state; one of the original 13 colonies, with capital Albany

Other synonyms of NY include Empire State, N.Y., New York.

NY (noun)	New York State (noun)
a Mid-Atlantic state; one of the original 13 colonies, with capital Albany	a Mid-Atlantic state; one of the original 13 colonies, with capital Albany