U.S. vs Granite State

U.S. and Granite State both are nouns.

Word	Noun	Adjective	Verb	Adverb
U.S.	Yes	No	No	No
Granite State	Yes	No	No	No

U.S. (noun)	Granite State (noun)
the executive and legislative and judicial branches of the federal government of the United States	a state in New England, with capital Concord; 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