chip in vs fee

chip in

verb
  • To make a contribution; help in a small way; especially, to pay for a part of something. 

  • To put a chip shot in the hole. 

  • To contribute. 

  • To ante; to put into the pot the amount of chips or money required to continue. 

  • To interrupt a discussion for the purpose of making a comment. 

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 chip in and fee occurred in a corpus of books? (source: Google Ngram Viewer )