Compton is a prominent lunar crater that is located in the northern hemisphere on the far side. It lies to the east of the Mare Humboldtianum, and southwest of the walled plain Schwarzschild. To the southeast is the heavily eroded crater Swann. This formation is roughly circular, with a wide, irregular outer rim that varies considerably in width. (wikipedia entry)
A crater is a circular depression likely created by an impact event. On the Moon they are named after deceased scientists, polar explorers, astronauts or cosmonauts.