bounty vs swap out

bounty

noun
  • Something given liberally; a gift. 

  • 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. 

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

swap out

noun
  • Anything that is swapped out for another; an exchange. 

  • A pre-prepared food item used in place of an unfinished food item in order to cut down the overall preparation time during filming. 

verb
  • To exchange (something) for (something else). (usually followed by with or for) 

  • To transfer (memory contents) into a swap file. 

  • To exchange (something or someone) for an unused (or less-used) equivalent. 

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