island vs Corsica

island and Corsica both are nouns.

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

island (noun)	Corsica (noun)
a zone or area resembling an island	a region of France on the island of Corsica; birthplace of Napoleon Bonaparte
a land mass (smaller than a continent) that is surrounded by water	an island in the Mediterranean; with adjacent islets it constitutes a region of France