U.S. vs New Jersey

U.S. and New Jersey both are nouns.

Word	Noun	Adjective	Verb	Adverb
U.S.	Yes	No	No	No
New Jersey	Yes	No	No	No

U.S. (noun)	New Jersey (noun)
the executive and legislative and judicial branches of the federal government of the United States	a Mid-Atlantic state on the Atlantic; one of the original 13 colonies
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	one of the British colonies that formed the United States, with capital Elizabethtown, Perth Amboy, or Burlington