Dravidian vs Indian

Dravidian and Indian both are nouns.

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

As nouns, Indian is a hypernym of Dravidian; that is, Indian is a word with a broader meaning than Dravidian:

Dravidian (noun)	Indian (noun)
a large family of languages spoken in south and central India and Sri Lanka, as well as overseas in Malaysia and Singapore	any of the languages spoken by Amerindians
a member of one of the aboriginal inhabitants of India	a native or inhabitant of India

Dravidian (adjective)	Indian (adjective)
	of or relating to or characteristic of India or the East Indies or their peoples or languages or cultures
	of or pertaining to Native Americans or their culture or languages