cashier vs obtainer

cashier

noun
  • One who works at a till or receives payments. 

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

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

  • To annul. 

  • To discard, put away. 

obtainer

noun
  • One who obtains. 

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