cashier vs purser

cashier

noun
  • Person in charge of the cash of a business or bank. 

  • One who works at a till or receives payments. 

verb
  • To work as a cashier (at a till or receiving payment) 

  • To annul. 

  • To discard, put away. 

purser

noun
  • The person responsible for handling the accounts on a ship, or for dealing with the passengers on a ship or aircraft. 

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