Aeolian vs Aeolis

Aeolian and Aeolis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Aeolian	Yes	Yes	No	No
Aeolis	Yes	No	No	No

Aeolian (noun)	Aeolis (noun)
the ancient Greek inhabitants of Aeolia	an ancient coastal region of northwestern Asia Minor (including Lesbos) where the Aeolians founded several cities around 1100 BC
a member of one of four linguistic divisions of the prehistoric Greeks, spoken in Boethia, Thessaly, in the Aegean island of Lesbos, and the Greek colonies of Asia Minor

Aeolian (adjective)	Aeolis (adjective)
of or pertaining to Aeolus, the Greek god of the winds; relating to or caused by the wind
of or relating to Aeolis or its ancient Greek people