Europe vs Luxembourg

Europe and Luxembourg both are nouns.

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

Europe (noun)	Luxembourg (noun)
an international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members	a grand duchy (a constitutional monarchy) landlocked in northwestern Europe between France and Belgium and Germany; an international financial center
the nations of the European continent collectively	the capital and largest city of Luxembourg
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