call back vs repudiate

call back

verb
  • To request someone's return. 

  • To telephone someone again at a more convenient time. 

  • To return to a shop or residence one has previously visited. 

noun
  • Request for a second interview or audition, following a successful initial interview. 

repudiate

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

  • To be repudiated. 

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

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

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