European Economic Community vs EU

European Economic Community and EU both are nouns.

Word	Noun	Adjective	Verb	Adverb
European Economic Community	Yes	No	No	No
EU	Yes	No	No	No

As nouns, European Economic Community and EU are synonyms defined as:

European Economic Community and EU: an international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members

Other synonyms of European Economic Community include Common Market, EC, EEC, Europe, European Community, European Union.

European Economic Community (noun)	EU (noun)
an international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members	an international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members