controvert vs polemicize

controvert

verb
  • To be involved or engaged in controversy; to argue. 

  • To dispute, to argue about (something). 

  • To argue against (something or someone); to contradict, to deny. 

polemicize

verb
  • To engage in argument. 

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