Like the US Dollar, the Euro has a strong international presence and over the years has emerged as a premier currency, second only to the US Dollar.
Japanese Yen (JPY) is the third most traded currency in the world. It has a much smaller international presence than the US Dollar or the Euro
British Pound (GBP) - The nickname Cable is derived from the telegrams used to update the GBPUSD rates across the Atlantic
Swiss Franc (CHF) is the currency of Switzerland and is represented with the symbol CHF. It is one of the most stable currencies in the world.
Currency pair - Base Currency / Quotation Currency - The BC is the currency that is priced and its amount is fixed at one unit. The other currency is the QC, which prices the BC, and its amount varies as the price of BC varies in the market.