North Carolina vs NC

North Carolina and NC both are nouns.

Word	Noun	Adjective	Verb	Adverb
North Carolina	Yes	No	No	No
NC	Yes	No	No	No

As nouns, North Carolina and NC are synonyms defined as:

North Carolina and NC: a state in southeastern United States; one of the original 13 colonies

Other synonyms of North Carolina include N.C., Old North State, Tar Heel State.

North Carolina (noun)	NC (noun)
a state in southeastern United States; one of the original 13 colonies	a state in southeastern United States; one of the original 13 colonies
one of the British colonies that formed the United States, with capital Bath, Edenton, Brunswick Town, or New Bern