profit vs reward

profit

verb
  • To benefit, gain. 

  • To benefit (somebody), be of use to (somebody). 

  • To take advantage of, exploit, use. 

noun
  • Total income or cash flow minus expenditures. The money or other benefit a non-governmental organization or individual receives in exchange for products and services sold at an advertised price. 

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 profit and reward occurred in a corpus of books? (source: Google Ngram Viewer )