Currency

A currency is a monetary unit, most often issued by a central bank (dollar, euro, yen, pound sterling...).

Each country or geographical area has its official currency. Each currency is generally subdivided into another unit that corresponds to a fraction of the current money.

A three-letter code is used to identify each currency, USD, EUR...

A currency is quoted on the currency market (foreign exchange market or forex) or sometimes by the country's central bank. It can be convertible and therefore freely exchanged for other currencies, or non-convertible, meaning not exchangeable or only under very strict conditions in terms of rate and quantity.

The US dollar is the most traded currency in the world, especially against the Euro.