1) Abrasion 2) Attrition 3) Corrasion 4) Eating away 5) Eroding 6) Erosion 7) Erosion by friction 8) Wearing 9) Wearing away 1) Attrition 2) Corrasion 3) Friction 
• (n.) A wearing off or away.
A wearing away by use or friction. ... Origin: L. De-tero, pp. -tritus, to rub off ... (05 Mar 2000) ... 
(de-trish´әn) the wearing away, as of teeth, by friction.
De·tri'tion noun [ Late Latin detritio . See Detriment .] A wearing off or away. « Phonograms which by process long-continued detrition have reached a step of extreme simplicity.» I. Taylor (The Alphabet). 
Type: Term Pronunciation: dē-trish′ŭn Definitions: 1. A wearing away by use or friction.
detrition, detritions 1. The process of wearing something away by friction or wear, or by rubbing one object against another one; for example, the teeth. 2. The act of wearing away by friction: 'We collected some beautiful beach pebbles which were worn smooth by detritions.' 3. The wearing down of rock particles by friction due to water, wind, or...
the act of wearing away by rubbing.