Athinai vs Athens

Athinai and Athens both are nouns.

Word	Noun	Adjective	Verb	Adverb
Athinai	Yes	No	No	No
Athens	Yes	No	No	No

As nouns, Athinai and Athens are synonyms defined as:

Athinai and Athens: the capital and largest city of Greece; named after Athena (its patron goddess)

Other synonyms of Athinai include capital of Greece, Greek capital.

Athinai (noun)	Athens (noun)
the capital and largest city of Greece; named after Athena (its patron goddess)	the capital and largest city of Greece; named after Athena (its patron goddess)
	a university town in northeast Georgia
	a town in southeast Ohio