Dravidian vs Malto

Dravidian and Malto both are nouns.

Word	Noun	Adjective	Verb	Adverb
Dravidian	Yes	No	No	No
Malto	Yes	No	No	No

As nouns, Malto is a hyponym of Dravidian; that is, Malto is a word with a more specific, narrower meaning than Dravidian:

Dravidian: a member of one of the aboriginal inhabitants of India
Malto: a member of the Dravidian people living in northern Bengal in eastern India

Other hyponyms of Dravidian include Badaga, Gadaba, Gond, Canarese, Kanarese, Kolam, Kota, Kotar, Kui, Savara, Tamil, Telugu, Toda, Tulu.

Dravidian (noun)	Malto (noun)
a large family of languages spoken in south and central India and Sri Lanka, as well as overseas in Malaysia and Singapore	the Dravidian language spoken by the Malto
a member of one of the aboriginal inhabitants of India	a member of the Dravidian people living in northern Bengal in eastern India