New York vs Manhattan Island

New York and Manhattan Island both are nouns.

Word	Noun	Adjective	Verb	Adverb
New York	Yes	No	No	No
Manhattan Island	Yes	No	No	No

New York (noun)	Manhattan Island (noun)
a Mid-Atlantic state; one of the original 13 colonies, with capital Albany	an island at the north end of New York Bay where the borough of Manhattan is located
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
one of the British colonies that formed the United States, with capital New York City