The term WEAR BY RUBBING is composed of two words: ABRADE and CHAFE. ABRADE means to wear away or rub off the surface of something by friction or erosion. CHAFE means to cause irritation or discomfort through rubbing or friction. Both words refer to the process of wearing something down by rubbing it. This can be seen in everyday life, such as when clothes are worn down by repeated washing and drying, or when shoes are scuffed from walking.