United States of America vs Organization of American States

United States of America and Organization of American States both are nouns.

Word	Noun	Adjective	Verb	Adverb
United States of America	Yes	No	No	No
Organization of American States	Yes	No	No	No

United States of America (noun)	Organization of American States (noun)
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	an association including most countries in the western hemisphere; created in 1948 to promote military and economic and social and cultural cooperation