United States vs Pelican State

United States and Pelican State both are nouns.

Word	Noun	Adjective	Verb	Adverb
United States	Yes	No	No	No
Pelican State	Yes	No	No	No

United States (noun)	Pelican State (noun)
the executive and legislative and judicial branches of the federal government of the United States	a state in southern United States on the Gulf of Mexico; one of the Confederate states during the American Civil War
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