When human beings are born, they shoulder the karma they have created in previous lives, and live their lives under the influence of that karma. Karma is a fundamental teaching of Buddhism, as is the cycle of rebirth. Essentially, karma means action, effect and the activity of being reborn. Put simply, there are two types of karma: good and bad. Bad karma is called “Zaisho.” Most of the time, when people mention karma, they are usually referring to bad karma or Zaisho.