debit vs retainer

debit

noun
  • In bookkeeping, an entry in the left hand column of an account. 

  • A sum of money taken out of a bank account. Thus called, because in bank's bookkeeping a cash withdrawal diminishes the amount of money held on the account, i.e. bank's debt to the customer. 

adj
  • of or relating to process of taking money from an account 

  • of or relating to the debit card function of a debit card rather than its often available credit card function 

verb
  • To record a receivable in the bookkeeping. 

  • To make an entry on the debit side of an account. 

retainer

noun
  • A fee one pays to reserve the other's time for services. 

  • A device that holds teeth in position after orthodontic treatment. 

  • Any thing or person that retains. 

  • A dependent or follower of someone of rank. 

  • A retaining valve. 

  • A paid servant, especially one who has been employed for many years. 

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