Here's why:

* Creep is a very slow, gradual movement of soil and rock downslope. It's often caused by freeze-thaw cycles, where water seeps into cracks, freezes, expands, and then thaws, slowly pushing the material downhill.

* Falls are rapid and dramatic events where large amounts of rock or soil detach from a cliff face and tumble down. This is often triggered by factors like earthquakes, heavy rainfall, or the weakening of the rock structure.

In summary: Creep is a slow, continuous process of downslope movement, while falls are rapid, dramatic events. This means creep has a greater cumulative effect on the landscape over long periods, even if the change seems negligible in the short term.