Christianity says sin is when someone does something bad. In Buddhism, people are reincarnated for kharmic reasons, but they say this without reference to sin causing bad kharma. Does sin preclude kharma? What is the difference then between sin and kharma (or what ever that causes bad kharma)? Strange that this forum doesn't even have a tag for Kharma when it seems to be a Buddhist construct.

Christianity says sin is when someone does something bad. In Buddhism, people are reincarnated for karmic reasons, but they say this without reference to sin causing bad karma. Does sin preclude karma? What is the difference then between sin and karma (or what ever that causes bad karma)?