Organization of American States vs Republic of Costa Rica

Organization of American States and Republic of Costa Rica both are nouns.

Word	Noun	Adjective	Verb	Adverb
Organization of American States	Yes	No	No	No
Republic of Costa Rica	Yes	No	No	No

Organization of American States (noun)	Republic of Costa Rica (noun)
an association including most countries in the western hemisphere; created in 1948 to promote military and economic and social and cultural cooperation	a republic in Central America; one of the most politically stable countries in Latin America