Acquired features include the ways they earn their livelihood and their mixing with Hindu communities. Sometimes both these happen simultaneously. Based on the means of their livelihood, Tribais are grouped as shermen, collectors of food, hunters, shifting cultivators, peasants, estate workers, and industrial workers.
Adapting Hindu ways of life is another criterion for the categorization of Tribal Groups. In Sociology, political science and public matters this criterion is more widely used.
