Mytilene vs Lesvos

Mytilene and Lesvos both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mytilene	Yes	No	No	No
Lesvos	Yes	No	No	No

As nouns, Mytilene and Lesvos are synonyms defined as:

Mytilene and Lesvos: an island of eastern Greece in the eastern Aegean Sea; in antiquity it was famous for lyric poetry

Other synonyms of Mytilene include Lesbos.

Mytilene (noun)	Lesvos (noun)
an island of eastern Greece in the eastern Aegean Sea; in antiquity it was famous for lyric poetry	an island of eastern Greece in the eastern Aegean Sea; in antiquity it was famous for lyric poetry