Europe vs Iberia

Europe and Iberia both are nouns.

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

Europe (noun)	Iberia (noun)
an international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members	a peninsula in southwestern Europe
the nations of the European continent collectively	an ancient geographical region to the south of the Caucasus Mountains that corresponded approximately to the present-day Georgia
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