contusion vs trauma

contusion

noun
  • Synonym of bruising. 

  • Synonym of bruise. 

trauma

noun
  • An emotional wound leading to psychological injury. 

  • An event that causes great distress. 

  • Any serious injury to the body, often resulting from violence or an accident. 

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