forgo vs repudiate

forgo

verb
  • To refrain from, to abstain from, to pass up, to withgo. 

  • To let pass, to leave alone, to let go. 

  • To do without, to abandon, to renounce. 

repudiate

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

  • To be repudiated. 

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

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

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