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, where coins were often stamped with symbols or images to signify authenticity and value. Throughout history, different cultures have developed their own systems of coinage, such as the Roman denarius or the Chinese cash coins. Today, modern coinage includes various denominations and materials, often produced by national mints to facilitate commerce and economic stability.