A line of cliffs formed by displacement along a fault is known as a fault scarp.

ummm....?

"A fault line and fault are the same cause the fault line has the same traces for a fault :}}

have fun"

That is incorrect. A fault is displaced ground, where the footwall (or hanging wall in the case of reverse faults) has been upthrust and an area of strata is exposed that was previously below the surface.

A fault-line scarp is an erosional feature, often resultant from reverse faults, because their scarps are gravitationally unstable and are almost always associated with inactive and old faults. Differential erosion can work away at less resistant beds while leaving behind a scarp of more resistant beds.

A geological landform, a scarp is a vertical relocation of the ground along either side of a fault, usually after an earthquake, one side being left higher than the other. It often marks the surface extension of an existing fault below. Scarps can be small or large, in some cases creating steep cliffs which may later erode.

It is called a "don't cheat on your Intro to Physical Geography" quiz.