bonus vs profit

bonus

verb
  • To pay a bonus, premium 

noun
  • An extra sum given as a premium, e.g. to an employee or to a shareholder. 

  • Something extra that is good; an added benefit. 

  • An addition to the player's score based on performance, e.g. for time remaining. 

  • One or more free throws awarded to a team when the opposing team has accumulated enough fouls. 

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. 

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