European Union vs Belgium

European Union and Belgium both are nouns.

Word	Noun	Adjective	Verb	Adverb
European Union	Yes	No	No	No
Belgium	Yes	No	No	No

European Union (noun)	Belgium (noun)
an international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members	a monarchy in northwestern Europe; headquarters for the European Union and for the North Atlantic Treaty Organization