Grinding/Polishing Grinding is a method of shaping or finishing by abrasion--rubbing an object on a hard, abrasive surface (a grindstone), often using sand or other additional abrasive, and water.
(Grinding/Polishing Grinding; is; a method of shaping or finishing by abrasion--rubbing an object on a hard, abrasive surface (a grindstone), often using sand or other additional abrasive, and water) (a method of shaping or finishing by abrasion; rubbing; an object; on a hard, abrasive surface)
Grinding/Polishing Grinding a method of shaping or finishing by abrasion
is rubbing
a method of shaping or finishing by abrasion--rubbing an object on a hard, abrasive surface (a grindstone), often using sand or other additional abrasive, and water
an object on a hard, abrasive surface