island vs Limnos

island and Limnos both are nouns.

Word	Noun	Adjective	Verb	Adverb
island	Yes	No	No	No
Limnos	Yes	No	No	No

island (noun)	Limnos (noun)
a zone or area resembling an island	a Greek island in the northern Aegean Sea; famous for a reddish-brown clay that has medicinal properties
a land mass (smaller than a continent) that is surrounded by water