Synonyms for Abrasion (same or very similar meaning)
WordNet sense 1 (an abraded area where the skin is torn or worn off):
excoriation, scrape, scratchWordNet sense 2 (erosion by friction):
attrition, corrasion, detritionWordNet sense 3 (the wearing down of rock particles by friction due to water or wind or ice):
grindingFrom the ODE community, based on WordNetadd/edit