Empire State vs Greater New York

Empire State and Greater New York both are nouns.

Word	Noun	Adjective	Verb	Adverb
Empire State	Yes	No	No	No
Greater New York	Yes	No	No	No

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