Dravidian vs Dravidic

Dravidian and Dravidic both are nouns.

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

As nouns, Dravidian and Dravidic are synonyms defined as:

Dravidian and Dravidic: a large family of languages spoken in south and central India and Sri Lanka, as well as overseas in Malaysia and Singapore

Other synonyms of Dravidian include Dravidian language.

Dravidian (noun)	Dravidic (noun)
a large family of languages spoken in south and central India and Sri Lanka, as well as overseas in Malaysia and Singapore	a large family of languages spoken in south and central India and Sri Lanka, as well as overseas in Malaysia and Singapore
a member of one of the aboriginal inhabitants of India