Aeolis vs Aeolia

Aeolis and Aeolia both are nouns.

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

As nouns, Aeolis and Aeolia are synonyms defined as:

Aeolis and Aeolia: an ancient coastal region of northwestern Asia Minor (including Lesbos) where the Aeolians founded several cities around 1100 BC

Aeolis (noun)	Aeolia (noun)
an ancient coastal region of northwestern Asia Minor (including Lesbos) where the Aeolians founded several cities around 1100 BC	an ancient coastal region of northwestern Asia Minor (including Lesbos) where the Aeolians founded several cities around 1100 BC