christianity is from desert middle east started from the root of abraham and hence judism,islam christianity are called as ''abrahamic religion' hinduism is derived from the name of people living in sindu river side and when alexender greek army came to bharath,they called people living in sindu river vally people as ''hindus' word twisted out of sindu. this is similar to tamil /english words which got derived out of sanskrit. example 'mother'in english came from ''matha',brother in english came from'bratha' in sanskrit,father in english came from''pitha 'culture' in english came from 'kalacharam'in sanskrit. similarly many words in tamils came from sanskrit.' vanam' (forest)in sanskrit is still used in govt department in tamilnadu. there are 240 words of sanskrit which are used in tamil.sanskrit is mother and tamil is son relationship.