fee vs indulge

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. 

indulge

verb
  • To grant as by favour; to bestow in concession, or in compliance with a wish or request. 

  • To grant an extension to the deadline of a payment. 

  • To give way to (a habit or temptation); to not oppose or restrain. 

  • To satisfy the wishes or whims of. 

  • To yield to a temptation or desire. 

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