Greece vs Epirus

Greece and Epirus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Greece	Yes	No	No	No
Epirus	Yes	No	No	No

Greece (noun)	Epirus (noun)
a republic in southeastern Europe on the southern part of the Balkan peninsula; known for grapes and olives and olive oil	an ancient area on the Ionian Sea that flourished as a kingdom in the 3rd century BC; located in northwestern Greece and southern Albania
ancient Greece; a country of city-states (especially Athens and Sparta) that reached its peak in the fifth century BCE