concur vs repudiate

concur

verb
  • To agree (in action or opinion); to have a common opinion; to coincide; to correspond. 

  • To converge. 

  • To meet in the same point; to combine or conjoin; to contribute or help towards a common object or effect. 

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 concur and repudiate occurred in a corpus of books? (source: Google Ngram Viewer )