Malay Archipelago vs East India

Malay Archipelago and East India both are nouns.

Word	Noun	Adjective	Verb	Adverb
Malay Archipelago	Yes	No	No	No
East India	Yes	No	No	No

As nouns, Malay Archipelago and East India are synonyms defined as:

Malay Archipelago and East India: a group of islands in the Indian and Pacific Oceans between Asia and Australia

Other synonyms of Malay Archipelago include East Indies, The Malay Archipelago.

Malay Archipelago (noun)	East India (noun)
a group of islands in the Indian and Pacific Oceans between Asia and Australia	a group of islands in the Indian and Pacific Oceans between Asia and Australia