Reincarnation is the belief that a soul is born multiple times into new bodies or life forms. The soul travels on an eternal path living in one body for a time, dying, and then entering a new body to live again.
To serve out karma from previous lives and thus eventually reach a state of perfect enlightenment where additional human lives are no longer necessary. Karma is the result or consequences of bad actions
Reincarnation is mainly taught within the Hindu and Buddhist religions