South Carolina vs Palmetto State

South Carolina and Palmetto State both are nouns.

Word	Noun	Adjective	Verb	Adverb
South Carolina	Yes	No	No	No
Palmetto State	Yes	No	No	No

As nouns, South Carolina and Palmetto State are synonyms defined as:

South Carolina and Palmetto State: a state in the Deep South; one of the original 13 colonies

Other synonyms of South Carolina include S.C., SC.

South Carolina (noun)	Palmetto State (noun)
a state in the Deep South; one of the original 13 colonies	a state in the Deep South; one of the original 13 colonies
one of the British colonies that formed the United States, with capital Charles Towne