Loss of material from a surface by means of some mechanical action.
Wear due to hard particles or hard protuberances forced against and moving along a solid surface.
Wear due to localised bonding between contacting solid surfaces leading to material transfer between the two surfaces or the loss from either surface.
Wear due to mechanical interaction between that surface and a fluid, a multicomponent fluid, or impinging liquid or solid particles
A form of erosion causing material to wear by the action of vapour bubbles in a very turbulent liquid