Answer: banknotes

AnswerCrossword Clue
BANKNOTESSome money
BANKNOTESGreen
BANKNOTESThey're payable on demand.
BANKNOTESPromises to pay
BANKNOTESForms of paper money
BANKNOTESEconomics student's study material?
banknotesBANKNOTE, a promissory note
banknotesA piece of paper money, constituting a central bank's promissory note to pay a stated sum to the bearer on demand