fee vs impost

fee

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. 

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

impost

noun
  • A tax, tariff or duty that is imposed, especially on merchandise. 

  • The weight that must be carried by a horse in a race, the handicap. 

  • The top part of a column, pillar, pier, wall, etc. that supports an arch. 

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