cost vs fee

cost

verb
  • To incur a charge of; to require payment of a (specified) price. 

  • To cause something to be lost; to cause the expenditure or relinquishment of. 

  • To require to be borne or suffered; to cause. 

  • To calculate or estimate a price. 

noun
  • Quality; condition; property; value; worth; a wont or habit; disposition; nature; kind; characteristic. 

  • A negative consequence or loss that occurs or is required to occur. 

  • Amount of money, time, etc. that is required or used. 

  • A cottise. 

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