contumely vs defamation

contumely

noun
  • Offensive and abusive language or behaviour; scorn, insult. 

defamation

noun
  • The act of injuring another person's reputation by any slanderous communication, written or oral; the wrong of maliciously injuring the good name of another. 

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