Cause abrasion is a term used to describe the wearing away of a surface due to friction. CHAFE, which is a five letter word, is one of the most common causes of abrasion. It occurs when two surfaces rub against each other, resulting in the gradual wearing away of the material. This can be caused by a variety of factors, such as wind, water, or even human activity. CHAFE can cause damage to both natural and man-made surfaces, and can lead to costly repairs if not addressed quickly.