Galapagos Islands vs island

Galapagos Islands and island both are nouns.

Word	Noun	Adjective	Verb	Adverb
Galapagos Islands	Yes	No	No	No
island	Yes	No	No	No

Galapagos Islands (noun)	island (noun)
a group of islands in the Pacific off South America; owned by Ecuador; known for unusual animal life	a zone or area resembling an island
	a land mass (smaller than a continent) that is surrounded by water