banknote vs bankroll

banknote

noun
  • A piece of paper currency. 

  • A promissory note issued by a bank, payable at a given time to a specific beneficiary. 

bankroll

noun
  • A roll of banknotes or other paper currency, carried in lieu of a wallet. 

  • The monetary assets of a person or organization. 

verb
  • To fund a project; to underwrite something. 

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