protection money vs rent

protection money

noun
  • Money paid, especially at regular intervals, to criminals or to corrupt officials who threaten to cause harm to the payer or to his or her business if the money is not paid. 

rent

noun
  • A similar payment for the use of a product, equipment or a service. 

  • An object for which rent is charged or paid. 

  • A division or schism. 

  • A payment made by a tenant at intervals in order to occupy a property. 

  • A profit from possession of a valuable right, as a restricted license to engage in a trade or business. 

  • A tear or rip in some surface. 

verb
  • To obtain or have temporary possession of an object (e.g. a movie) in exchange for money. 

  • To occupy premises in exchange for rent. 

  • To be leased or let for rent. 

  • To grant occupation in return for rent. 

adj
  • That has been torn or rent; ripped; torn. 

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