bruise vs contusion

bruise

noun
  • A purplish mark on the skin due to leakage of blood from capillaries under the surface that have been damaged by a blow. 

  • A dark mark on fruit or vegetables caused by a blow to the surface. 

verb
  • To strike (a person), originally with something flat or heavy, but now specifically in such a way as to discolour the skin without breaking it. 

  • To become bruised. 

  • To fight with the fists; to box. 

  • To impair (gin) by shaking rather than stirring. 

  • To damage the skin of (fruit or vegetables), in an analogous way. 

  • To harm or injure. 

  • Of fruit or vegetables, to gain bruises through being handled roughly. 

contusion

noun
  • Synonym of bruising. 

  • Synonym of bruise. 

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