confirm vs repudiate

confirm

verb
  • To administer the sacrament of confirmation on (someone). 

  • To assure the accuracy of previous statements. 

  • To strengthen; to make firm or resolute. 

repudiate

verb
  • To reject the truth or validity of; to deny. 

  • To be repudiated. 

  • To refuse to have anything to do with; to disown. 

  • To refuse to pay or honor (a debt). 

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