Sanskrit's language is from Indo Iranian family, whereas Tamil is from Dravidian language family. Hence, they both have different roots.
Sanskrit and Dravidian language - Tamil have a same rising period so It is hard to claim which one is older. Since we don’t have any exact references for a clear understanding, its difficult to claim which one is oldest between the two.
Amongst all languages like Pali, Prakrut, Magadhi etc. Sanskrit and Tamil are oldest languages of India.
Sanskrit and Dravidian language - Tamil have a same rising period so It is hard to claim which one is older. Since we don’t have any exact references for a clear understanding, its difficult to claim which one is oldest between the two.
Amongst all languages like Pali, Prakrut, Magadhi etc. Sanskrit and Tamil are oldest languages of India.