Bahama Islands vs Bahamas

Bahama Islands and Bahamas both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bahama Islands	Yes	No	No	No
Bahamas	Yes	No	No	No

As nouns, Bahama Islands and Bahamas are synonyms defined as:

Bahama Islands and Bahamas: island country in the Atlantic to the east of Florida and Cuba; a popular winter resort

Other synonyms of Bahama Islands include Commonwealth of the Bahamas.

Bahama Islands (noun)	Bahamas (noun)
island country in the Atlantic to the east of Florida and Cuba; a popular winter resort	island country in the Atlantic to the east of Florida and Cuba; a popular winter resort