confirm vs validate

confirm

verb
  • To assure the accuracy of previous statements. 

  • To administer the sacrament of confirmation on (someone). 

  • To strengthen; to make firm or resolute. 

validate

verb
  • To check or prove the validity of; verify. 

  • To have its validity successfully proven. 

  • To render valid. 

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