Kingdom of Belgium vs European Economic Community

Kingdom of Belgium and European Economic Community both are nouns.

Word	Noun	Adjective	Verb	Adverb
Kingdom of Belgium	Yes	No	No	No
European Economic Community	Yes	No	No	No

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