Europe vs aggregation

Europe and aggregation both are nouns.

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

As nouns, aggregation is a hypernym of Europe; that is, aggregation is a word with a broader meaning than Europe:

Other hypernyms of Europe include accumulation, assemblage, collection.

Europe (noun)	aggregation (noun)
an international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members	the act of gathering something together
the nations of the European continent collectively	several things grouped together or considered as a whole
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