Karma, a Sanskrit word that roughly translates to "action," is a core concept in some Eastern religions, including Hinduism and Buddhism. The concept of Karma is India's unique contribution to the world. Hinduism, Buddhism and Jainism, the major religions of the world which originated in India, all acknowledge the universality of the law of karma in their own individual ways. According to Jainism, karma is not just a metaphysical law, but a real substance which flows into people and attaches itself to them like an impurity as they engage in various actions. People are born again and again until they rid themselves of the karmic substance.