IOTA vs cashier

IOTA

noun
  • A bank account that earns interest and pays it to a third party, generally a charity; the principal is typically being held in escrow by the accountholder. 

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. 

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