Answer:
Abrasion is when particles carried by water or wind weather away rocks.

Additional:
An abrasion is also a wound caused when skin is scraped away by contact with another object. A laceration would be a cut, an avulsion is when a body part is severed completely, a contusion is a bruise, etc.
Contributor: Aggie80
First answer by Quirkyquantummechanic. Last edit by Aggie80. Contributor trust: 4979 [recommend contributor recommended]. Question popularity: 35 [recommend question].