NJ vs New Jersey

NJ and New Jersey both are nouns.

Word	Noun	Adjective	Verb	Adverb
NJ	Yes	No	No	No
New Jersey	Yes	No	No	No

As nouns, NJ and New Jersey are synonyms defined as:

NJ and New Jersey: a Mid-Atlantic state on the Atlantic; one of the original 13 colonies

Other synonyms of NJ include Garden State, Jersey, N.J..

NJ (noun)	New Jersey (noun)
a Mid-Atlantic state on the Atlantic; one of the original 13 colonies	a Mid-Atlantic state on the Atlantic; one of the original 13 colonies
	one of the British colonies that formed the United States, with capital Elizabethtown, Perth Amboy, or Burlington