USA vs South Carolina

USA and South Carolina both are nouns.

Word	Noun	Adjective	Verb	Adverb
USA	Yes	No	No	No
South Carolina	Yes	No	No	No

USA (noun)	South Carolina (noun)
the army of the United States of America; the agency that organizes and trains soldiers for land warfare	a state in the Deep South; 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 Charles Towne