Windward Islands vs Saint Vincent and the Grenadines

Windward Islands and Saint Vincent and the Grenadines both are nouns.

Word	Noun	Adjective	Verb	Adverb
Windward Islands	Yes	No	No	No
Saint Vincent and the Grenadines	Yes	No	No	No

Windward Islands (noun)	Saint Vincent and the Grenadines (noun)
a group of islands in the southeastern West Indies; the southern part of the Lesser Antilles	an island country in the central Windward Islands; achieved independence from the United Kingdom in 1979