Europe vs serf

Europe and serf both are nouns.

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

Europe (noun)	serf (noun)
an international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members	(Middle Ages) a person who is bound to the land and owned by the feudal lord
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