Which is higher CFO or COO?

I'm curious to understand the hierarchy within a company's executive team. Specifically, I'm wondering which position holds a higher rank: the Chief Financial Officer (CFO) or the Chief Operating Officer (COO)? Both roles play crucial parts in the success of an organization, but I'm interested in knowing which one typically has more authority and responsibility. Could you elaborate on the differences in their roles and responsibilities, and how they compare in terms of their position within the company's leadership structure?