Colombia vs OAS

Colombia and OAS both are nouns.

Word	Noun	Adjective	Verb	Adverb
Colombia	Yes	No	No	No
OAS	Yes	No	No	No

Colombia (noun)	OAS (noun)
a republic in northwestern South America with a coastline on the Pacific Ocean and the Caribbean Sea; achieved independence from Spain in 1821 under the leadership of Simon Bolivar; Spanish is the official language	an association including most countries in the western hemisphere; created in 1948 to promote military and economic and social and cultural cooperation