To Trade Foreign Currency

foreign currency
In economics, the term currency can refer to a particular currency, for example Pound Sterling, or to the coins and banknotes of a particular currency, which comprise the physical aspects of a nation's money supply.
(Foreign currencies) You may now view our prices in a range of foreign currencies. However we now only accept British Pounds as payment when checking out. You can pay by debit or credit card and your currency will be automatically converted to pound sterling.
Paper money and coins from other countries.

trade
Buy and sell goods and services
engage in the trade of; "he is merchandising telephone sets"
the skilled practice of a practical occupation; "he learned his trade as an apprentice"
Buy or sell (a particular item or product)
(esp. of shares or currency) Be bought and sold at a specified price
the commercial exchange (buying and selling on domestic or international markets) of goods and services; "Venice was an important center of trade with the East"; "they are accused of conspiring to constrain trade"