Currency is a physical quantity that represents the circulating medium of exchange in a particular country or region. It is used as a unit of account, a store of value, and a medium of exchange in economic transactions.

Common examples of units of currency include dollars, euros, yen, pounds, and rupees. These units are used in different countries around the world and have varying exchange rates.

• Currency is essential for conducting economic transactions in a country or region.
• It allows for the exchange of goods and services.
• Currency fluctuations can have a significant impact on international trade and investment.