<human>:  How many different types of Buddhism are there?
<bot>: There are several different types of Buddhism, but the most common are Mahayana and Theravada. Mahayana Buddhism is a type of Buddhism that focuses on the idea of “universal salvation” and the goal of achieving nirvana, or enlightenment. Theravada Buddhism is a type of Buddhism that focuses on the idea of “personal salvation” and the goal of achieving liberation from suffering.