NATO vs Greece

NATO and Greece both are nouns.

Word	Noun	Adjective	Verb	Adverb
NATO	Yes	No	No	No
Greece	Yes	No	No	No

NATO (noun)	Greece (noun)
an international organization created in 1949 by the North Atlantic Treaty for purposes of collective security	a republic in southeastern Europe on the southern part of the Balkan peninsula; known for grapes and olives and olive oil
	ancient Greece; a country of city-states (especially Athens and Sparta) that reached its peak in the fifth century BCE