Europe vs Austria-Hungary

Europe and Austria-Hungary both are nouns.

Word	Noun	Adjective	Verb	Adverb
Europe	Yes	No	No	No
Austria-Hungary	Yes	No	No	No

Europe (noun)	Austria-Hungary (noun)
an international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members	a geographical area in central and eastern Europe; broken into separate countries at the end of World War I
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