Scrape, scratch (8)
I believe the answer is:
abrasion
This clue is a double definition.
'scrape' is the first definition.
(I know that scrape can be written as abrasion)
'scratch' is the second definition.
(I know that scratch can be written as abrasion)
(Other definitions for abrasion that I've seen before include "Wearing away; graze" , "Cut or scratch" , "Graze on the skin" , "Grazing" , "Skin wound" .)