bounty vs widow's mite

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. 

widow's mite

noun
  • A very small gift or donation which, however, represents a great sacrifice on the part of the giver. 

  • The lepton coin. 

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