Europe vs Greece

Europe and Greece both are nouns.

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

Europe (noun)	Greece (noun)
an international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members	a republic in southeastern Europe on the southern part of the Balkan peninsula; known for grapes and olives and olive oil
the nations of the European continent collectively	ancient Greece; a country of city-states (especially Athens and Sparta) that reached its peak in the fifth century BCE
the 2nd smallest continent (actually a vast peninsula of Eurasia); the British use `Europe' to refer to all of the continent except the British Isles