New York vs United States of America

New York and United States of America both are nouns.

Word	Noun	Adjective	Verb	Adverb
New York	Yes	No	No	No
United States of America	Yes	No	No	No

New York (noun)	United States of America (noun)
a Mid-Atlantic state; one of the original 13 colonies, with capital Albany	North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776
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