The languages of South India are Dravidian, which is a different linguistic group than the Indo-European languages of the North of the subcontinent. The two groups of languages have many different root words (though a number in common we might add), and above all a different grammatical structure, the Dravidian being agglutinative and the Indo-European being inflected.
Dravidian languages possess a very old history of their own, which their legends, the Tamil Sangha literature, show a history in South India and Sri Lanka dating back
over five thousand years.
Author : David Frawley