Dravidian vs Gadaba

Dravidian and Gadaba both are nouns.

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

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

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

Dravidian (noun)	Gadaba (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 Gadaba
a member of one of the aboriginal inhabitants of India	a member of an agricultural people in southeastern India