island vs Spice Islands

island and Spice Islands both are nouns.

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

island (noun)	Spice Islands (noun)
a zone or area resembling an island	a group of island in eastern Indonesia between Celebes and New Guinea; settled by the Portuguese but taken by the Dutch who made them the center for a spice monopoly, at which time they were known as Spice Islands
a land mass (smaller than a continent) that is surrounded by water