extort vs reward

extort

verb
  • To obtain by means of the offense of extortion. 

  • To take or seize from an unwilling person by physical force, menace, duress, torture, or any undue or illegal exercise of power or ingenuity. 

  • To twist outwards. 

reward

verb
  • To recompense. 

  • To give a reward to or for. 

noun
  • Something of value given in return for an act. 

  • A prize promised for a certain deed or catch 

  • The result of an action, whether good or bad. 

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