Answer
Slumps and rockslides both move by sliding, but they differ in the type of material involved and the shape of the movement. Slumps typically involve the downward and outward movement of a mass of unconsolidated material (such as soil or clay) along a curved surface. The material moves as a unit, rotating along the slip surface. On the other hand, rockslides involve the rapid downslope movement of large blocks or masses of rock along a well-defined plane or joint. The movement is more linear, and the material remains relatively intact during the slide.
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