U.S. vs North Star State

U.S. and North Star State both are nouns.

Word	Noun	Adjective	Verb	Adverb
U.S.	Yes	No	No	No
North Star State	Yes	No	No	No

U.S. (noun)	North Star State (noun)
the executive and legislative and judicial branches of the federal government of the United States	a midwestern state
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