Gulf of Aegina vs Hellenic Republic

Gulf of Aegina and Hellenic Republic both are nouns.

Word	Noun	Adjective	Verb	Adverb
Gulf of Aegina	Yes	No	No	No
Hellenic Republic	Yes	No	No	No

Gulf of Aegina (noun)	Hellenic Republic (noun)
a gulf of the Aegean on the southeastern coast of Greece	a republic in southeastern Europe on the southern part of the Balkan peninsula; known for grapes and olives and olive oil