United Kingdom vs Europe

United Kingdom and Europe both are nouns.

Word	Noun	Adjective	Verb	Adverb
United Kingdom	Yes	No	No	No
Europe	Yes	No	No	No

United Kingdom (noun)	Europe (noun)
a monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland; `Great Britain' is often used loosely to refer to the United Kingdom	an international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members
	the nations of the European continent collectively
	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