What are the opposite words for banknote?

Banknote is a term that refers to a piece of paper currency issued by a government or central bank. The word 'banknote' has several antonyms, which include coins, digital currencies, credit cards, and checks. Coins are physical pieces of currency made from metal, which are typically used for small transactions, unlike banknotes. Digital currencies, such as Bitcoin and Ethereum, are virtual currencies that eliminate the need for physical banknotes. Credit cards are a form of payment that allows individuals to borrow money from a financial institution or bank, while checks are written documents that authorize the transfer of money from one account to another. Each of these antonyms offers a unique alternative to the traditional banknote.