European Union vs Hellenic Republic

European Union and Hellenic Republic both are nouns.

Word	Noun	Adjective	Verb	Adverb
European Union	Yes	No	No	No
Hellenic Republic	Yes	No	No	No

European Union (noun)	Hellenic Republic (noun)
an international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members	a republic in southeastern Europe on the southern part of the Balkan peninsula; known for grapes and olives and olive oil