Coinage refers to the process of creating coins, which are standardized pieces of metal used as money. Coins typically have a specific weight and value, making them a reliable medium for trade. The practice of coinage dates back to ancient civilizations, with the first known coins minted in Lydia around 600 BCE. Coins often feature designs that represent a nation's culture, history, or important figures. Over time, coinage has evolved to include various materials, such as copper, silver, and gold, as well as modern alternatives like nickel and zinc. Today, coins remain an essential part of the global economy.