Caribbean vs Commonwealth of the Bahamas

Caribbean and Commonwealth of the Bahamas both are nouns.

Word	Noun	Adjective	Verb	Adverb
Caribbean	Yes	No	No	No
Commonwealth of the Bahamas	Yes	No	No	No

Caribbean (noun)	Commonwealth of the Bahamas (noun)
region including the Caribbean Islands	island country in the Atlantic to the east of Florida and Cuba; a popular winter resort
an arm of the Atlantic Ocean between North and South America; the origin of the Gulf stream