Dravidian vs Kota

Dravidian and Kota both are nouns.

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

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

Dravidian: a member of one of the aboriginal inhabitants of India
Kota: a member of the Dravidian people living in the Nilgiri Hills in southern India

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

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