Forex is undoubtedly the biggest of all markets and this is one such reason to believe that there is uniqueness in the market. The volume of trade which occurs in the market actually represents a huge liquidity and thus forms one of the most unique features of the market. Even the geographical dispersion is another factor for the market.
The mode of operations and the factors affecting exchange rates are some of the features of the Forex market which also include relatively low profit margins as compared to markets of fixed income. Usage of leverage for enhancing profits is others in the list.