A general term for downhill slides of earth is known as

Mass wasting is the general term for the downslope movement of rock and soil under gravity.

It includes landslides, slumps, rockfalls and mudflows.

Earth wasting is not a recognised geological term.

Mud wasting names only one narrow type and not the general process.

Hill wasting is likewise not the accepted general term.

Water, slope steepness and loss of vegetation all trigger mass wasting.