island vs Dominica

island and Dominica both are nouns.

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

island (noun)	Dominica (noun)
a zone or area resembling an island	a country on the island of Dominica
a land mass (smaller than a continent) that is surrounded by water	a volcanic island in the Windward Islands that was once a stronghold of the Carib Indians