contusion vs lividity

contusion

noun
  • Synonym of bruise. 

  • Synonym of bruising. 

lividity

noun
  • A livid area of skin, such as a bruise, or as is often found on cadavers. 

  • Livor mortis, suggillation. 

  • The state or quality of being livid. 

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