NY vs Empire State

NY and Empire State both are nouns.

Word	Noun	Adjective	Verb	Adverb
NY	Yes	No	No	No
Empire State	Yes	No	No	No

As nouns, NY and Empire State are synonyms defined as:

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

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

NY (noun)	Empire 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