A Contract for Difference (CFD) is a popular financial instrument used to speculate on the short-term price movements of underlying assets. However, there are several synonyms for the term CFD, including Differential Contract, Equity Swap, Margin Contract, and Rolling Spot Futures Contract. Ultimately, these different names all refer to the same type of financial instrument that allows traders to profit from small changes in the financial market. Regardless of the specific terminology used, all CFDs function similarly and provide a way for traders to speculate on price movements without owning the underlying asset. CFDs are popular among traders due to their flexibility and the ability to trade on both long and short positions, making them a valuable tool for investors.