What are the three types of faults and they different?

The three main types of faults are normal faults, reverse (or thrust) faults, and strike-slip faults. Normal faults occur when the crust is extended, causing one block to drop relative to the other. Reverse faults happen when the crust is compressed, pushing one block up over another. Strike-slip faults involve horizontal movement where blocks slide past each other, typically associated with shear stress.