contusion vs corrasion

contusion

noun
  • Synonym of bruising. 

  • Synonym of bruise. 

corrasion

noun
  • The wearing away of surface material. 

  • Corrading (erosion by abrasion) caused by such as: wind-blown or water-borne sand, stream-borne or glacier-borne stones, or collisions between stones under the influence of seaside breakers. 

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