brainwash vs proselytize

brainwash

verb
  • To affect one's mind by using extreme mental pressure or any other mind-affecting process. (e.g. hypnosis) 

  • To persuade completely and forcibly. 

noun
  • A distorting effect upon one's memory, belief, or ideas, as by propaganda. 

proselytize

verb
  • To advertise one’s religious beliefs; to convert (someone) to one’s own faith or religious movement or encourage them to do so. 

  • To coerce into religious conversion. 

  • To advertise a non-religious belief, way of living, cause, point of view, (scientific) hypothesis, social or other position, political party, or other organization; to convince someone to join such a cause or organization or support such a position; to recruit someone. 

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