In the futures market, futures contracts are bought and sold based upon a standard size and settlement date on public commodities markets, such as the Chicago Mercantile Exchange. In the U.S., the National Futures Association regulates the futures market. Futures contracts have specific details, including the number of units being traded, delivery and settlement dates, and minimum price increments that cannot be customized. The exchange acts as a counterpart to the trader, providing clearance and settlement.
As mentioned earlier, in a long trade (also known as a buy trade), a trader will open a trade at the bid price, and will aim to close the trade at a higher price, making a profit on the difference between the opening and closing value of the currency pair. So if the EUR/USD bid price is 1.16667, and the trade closes at the price of 1.17568, the difference is 0.00901, or 90.1 pips. (When trading a single lot, that would make a 901 USD profit).
Forex is a portmanteau of foreign currency and exchange. Foreign exchange is the process of changing one currency into another currency for a variety of reasons, usually for commerce, trading, or tourism. According to a recent triennial report from the Bank for International Settlements (a global bank for national central banks), the average was more than $5.1 trillion in daily forex trading volume.