bounty vs fee

bounty

verb
  • To offer a monetary reward for the capturing or killing of. 

noun
  • Generosity; also (countable) an act of generosity. 

  • A reward for some specific act, especially one given by an authority or a government. 

  • A monetary reward for capturing (or, in the past, killing) a person accused or convicted of a crime and who is at large; also, a similar reward for capturing or killing an animal which is dangerous or causing a nuisance. 

  • An abundance or wealth. 

  • Money paid to a person when becoming a member of the armed forces, or as a reward for some service therein. 

  • Something given liberally; a gift. 

fee

verb
  • To reward for services performed, or to be performed; to recompense; to hire or keep in hire; hence, to bribe. 

noun
  • A right to the use of a superior's land as a stipend for certain services to be performed, typically military service. 

  • An additional monetary payment charged for a service or good that is minor compared to the underlying cost. 

  • Synonym of fief: the land so held. 

  • An inheritable estate in land, whether absolute and without limitation to potential heirs (fee simple) or with limitations to particular kinds of heirs (fee tail). 

  • An inheritable estate in land held of a feudal lord on condition of performance of certain services, typically military service. 

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