Madeiras vs Madeira Islands

Madeiras and Madeira Islands both are nouns.

Word	Noun	Adjective	Verb	Adverb
Madeiras	Yes	No	No	No
Madeira Islands	Yes	No	No	No

As nouns, Madeiras and Madeira Islands are synonyms defined as:

Madeiras and Madeira Islands: a group of volcanic islands in the Atlantic Ocean to the west of Morocco; the group forms an autonomous region of Portugal

Madeiras (noun)	Madeira Islands (noun)
a group of volcanic islands in the Atlantic Ocean to the west of Morocco; the group forms an autonomous region of Portugal	a group of volcanic islands in the Atlantic Ocean to the west of Morocco; the group forms an autonomous region of Portugal