recant vs repudiate

recant

verb
  • To withdraw or repudiate a statement or opinion formerly expressed, especially formally and publicly. 

  • To give a new cant (slant, angle) to something, in particular railway track on a curve. 

repudiate

verb
  • To be repudiated. 

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

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

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

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