contusion vs running sore

contusion

noun
  • Synonym of bruising. 

  • Synonym of bruise. 

running sore

noun
  • Used other than figuratively or idiomatically: see running, sore.; an ulcer that oozes pus. 

  • A festering problem; a situation that remains problematic or gets worse over time. 

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