Here are some more specific terms based on the type of movement:

* Rockfall: Individual rocks or boulders falling freely down a slope.

* Landslide: A large mass of rock, soil, and debris sliding down a slope.

* Slump: A rotational movement of soil or rock along a curved surface.

* Creep: A slow, gradual movement of soil or rock downslope.

* Debris flow: A fast-moving mixture of mud, rocks, and water.

* Mudflow: A debris flow consisting mainly of mud.

Mass wasting is a natural process that can be caused by a variety of factors, including:

* Gravity: The primary driving force behind mass wasting.

* Water: Rain, snowmelt, and groundwater can saturate soil and make it more susceptible to movement.

* Earthquakes: Seismic activity can trigger landslides and other forms of mass wasting.

* Volcanic eruptions: Eruptions can deposit loose ash and debris that can be easily eroded by wind and rain.

* Human activity: Deforestation, mining, and construction can destabilize slopes and increase the risk of mass wasting.