island vs Chiloe Archipelago

island and Chiloe Archipelago both are nouns.

Word	Noun	Adjective	Verb	Adverb
island	Yes	No	No	No
Chiloe Archipelago	Yes	No	No	No

island (noun)	Chiloe Archipelago (noun)
a zone or area resembling an island	the largest Chilean island and the only one to be settled; located off south-central Chile
a land mass (smaller than a continent) that is surrounded by water