Original sentence: About 25 percent of the Munda population are Christians
Edited sentence: Many others of these major groups called castes bear merely tribal or ethic names.Some of the major groups derived from the principal professions they follow or the crafts they practice, for example, the cattle-breeding group takes the significant name of Gawli, derived from a Sanskrit word for cow.Such are for example: Arora, Gujjar, Lohana, Bhatia, Meena, Bhil, Dom, Oraon,Munda, Santal, Koch, Ahir, Mahar, Nayar, Maratha,Gond, Khond, etc.Such is at least the case with Gadaria from 'gadar', on old Hindi word for sheep.The names of the shepherd castes seem to be derived from words meaning sheep