banknote vs funds

banknote

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

  • A piece of paper currency. 

funds

noun
  • Permanent debts due by a government and paying interest. 

  • Financial resources. 

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