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1)SLUMPING=Slump is a type of slide (movement as a mass) that takes place within thick unconsolidated deposits (typically thicker than 10 m). Slumps involve movement along one or more curved failure surfaces, with downward motion near the top and outward motion toward the bottom
LANDSLIDES=a rapid downslope movement of rock or soil as a more or less coherent mass. Landslides are characterized by a slippage plane that is clearly defined. A landslide may turn into a flow at the bottom as the blocks become tumbled over. Usually the material moves as a large block known as a slump block. The scar above a landslide is easily visible. Steep slopes of shale are susceptible to landslide activity. But landslides occur everywhere on large or small scales. They can occur after earthquakes or removal of part of the slope due to construction, particularly in the construction of roads.
ROCKFALL=Falls are usually the free-fall of pieces of rock from a mountain or cliff face. The size of the piece(s) can range from tiny grains to blocks weighing a ton or more. The debris and rock fragements from rock falls collect at the base of the slope as talus. This talus protects the base of the mountain from erosion. On mountains, ice wedging is the main contributor.
As water from snowmelt finds its way into the cracks and joints of the rock face, it may refreeze and being to expand.
SOLIFLUCTION= major type of mass movement in cold polar regions and some high mountains. Solifluction is a special type of creep that occurs in areas of permafrost. Permafrost refers to the layer of groundwater that fills in the pore spaces of soil and rock that is permanently frozen. The permafrost layer can be anywhere from a meter to several hundred meters thick. It takes up about 20% of the world's land. In times of warm weather, the ground will begin to thaw from the surface downward. All of the freshly melted water cannot absorb into or move through the permafrost layer.
2) ROCKFALL AND LANDSLIDE ARE RAPID MASS MOVEMENT.
3) SOLIFLUCTION IS SLOW MASS MOVEMENT.