Complex sentence: Typically, SDEs incorporate random white noise which can be thought of as the derivative of Brownian motion (or the Wiener process); however, it should be mentioned that other types of random fluctuations are possible, such as jump processes.
Split into simpler sentences: Typically, SDEs contain a variable which represents random white noise that is calculated as the derivative of Brownian motion or the Wiener process. However, it should be mentioned that other types of random behaviour are possible, such as jump processes.