Bahamas vs Bahama Islands

Bahamas and Bahama Islands both are nouns.

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

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

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

Other synonyms of Bahamas include Commonwealth of the Bahamas.

Bahamas (noun)	Bahama Islands (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