Causing abrasion is an action that can be done in a variety of ways. CHAFE, SCRAPE, SCAB, and GRAZE are all terms that describe this action. CHAFE is the act of rubbing something against another surface, often causing friction and heat. SCRAPE is the act of using a sharp object to remove material from a surface. SCAB is the formation of a hard crust over a wound or sore. GRAZE is the act of lightly brushing against a surface. All of these actions can cause abrasion.