abrasion vs scurf

abrasion

noun
  • A superficial wound caused by scraping; an area of skin where the cells on the surface have been scraped or worn away. 

  • The effect of mechanical erosion of rock, especially a river bed, by rock fragments scratching and scraping it. 

  • An abraded, scraped, or worn area. 

  • The wearing away of the surface of the tooth by chewing. 

  • The act of abrading, wearing, or rubbing off; the wearing away by friction. 

scurf

noun
  • The flakes of skin that fall off as a result of a skin disease. 

  • Minute membranous scales on the surface of some leaves, as in the goosefoot. 

  • A grey bull trout (Salvelinus confluentus). 

  • The foul remains of anything adherent. 

  • A skin disease. 

  • Any crust-like formations on the skin, or in general. 

How often have the words abrasion and scurf occurred in a corpus of books? (source: Google Ngram Viewer )