Lone-Star State vs U.S.

Lone-Star State and U.S. both are nouns.

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

Lone-Star State (noun)	U.S. (noun)
the second largest state; located in southwestern United States on the Gulf of Mexico	the executive and legislative and judicial branches of the federal government of the United States
	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