archipelago vs Lesser Sunda Islands

archipelago and Lesser Sunda Islands both are nouns.

Word	Noun	Adjective	Verb	Adverb
archipelago	Yes	No	No	No
Lesser Sunda Islands	Yes	No	No	No

archipelago (noun)	Lesser Sunda Islands (noun)
a group of many islands in a large body of water	a chain of islands forming a province of Indonesia to the east of Java; includes Bali and Timor