mortify vs putrefy

mortify

verb
  • To gangrene. 

  • To embarrass, to humiliate. To injure one's dignity. 

  • To grant in mortmain. 

  • To discipline (one's body, appetites etc.) by suppressing desires; to practise abstinence on. 

  • To lose vitality. 

  • To be subdued. 

putrefy

verb
  • To become gangrenous. 

  • To make morbid, carious, or gangrenous. 

  • To corrupt; to make foul. 

  • To become filled with a pus-like or bile-like substance. 

  • To reach an advanced stage of decomposition. 

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