Wikipedia defines evolution as "the change in the inherited characteristics of biological populations over successive generations." Creationism, on the other hand, is defined as "the religious belief that life, the Earth, and the universe are the creation of a supernatural being."
Key difference: Evolution is part of science. Creationism is part of belief systems.
In Louisiana, a movement to help get creationism taught in science classes hit a snag when this snappy teacher decided to stand up and explain how it isn't actually science. As the state senator starts asking questions, it becomes clear that he doesn't actually know how evolution works...
For those playing the home game, the senator had evolution backwards. His understanding of evolution is that all creatures eventually turn into humans, whereas in reality, it's that one common ancestor split off in a billion directions, with humans becoming just one arbitrary direction of billions of potential outcomes.