Which term describes the process by which rocks are worn away and removed?

The process by which rocks are worn away and removed is known as erosion. This involves the transportation of sediments and rock fragments from one location to another, typically through natural forces like water, wind, ice, or gravity. Erosion is distinct from weathering, which is the breaking down of rocks into smaller pieces without movement. While weathering prepares rocks for erosion by weakening them, erosion is the actual movement and removal of those particles from their original locations.

In the context of the other terms, deposition refers to the process in which sediments settle and accumulate in a new location, often after being transported by erosion. Igneous activity pertains to processes involving the formation of igneous rocks from molten magma or lava. Thus, erosion is the accurate term for the movement and removal of worn rocks.