what is a currency exchange 
a currency exchange is a licensed business that allows customers to exchange one currency for another currency exchange of physical money coins and paper bills is usually done over the counter at a teller station which can be found in various places such as airports banks hotels and resorts currency exchanges make money by charging a nominal fee and through the bid ask spread in a currency also known as a bureau de change or casa de cambio a currency exchange should not be confused with the foreign exchange forex market where traders and financial institutions transact in currencies 