What is the difference between the Amish and Mennonites? I've heard of different groups, typically technology-rejecting ones, being referred to as "Amish" or "Mennonite". Is there a difference between those two terms? What do these groups believe?
According to Wikipedia, the Amish (aka Amish Mennonites) are a group that broke off from the Mennonites in Switzerland in 1693, led by Jakob Ammann, from which the name comes.1

While Amish reject many modern technological advancements, Mennonites have a broader range of acceptance of such things.  Some Mennonites are quite similar to the Amish, while others accept all modern technology.  I had a friend in college who was Mennonite, and he drove a car, used computers and did everything else.

Amish reference