What is a sell order in Coinbase advanced?

Could you elaborate on what a sell order specifically entails in the context of Coinbase Advanced? As a trader in the cryptocurrency market, I often come across the term, but I'm curious to know how it differs from a standard sell order and what additional features or benefits it might offer. Specifically, I'm interested in understanding the process, from initiating the order to its execution, and how Coinbase Advanced's platform optimizes this process for its users.