Back in October, after a 2-7 start to the season, the Dolphins parted ways with Chris Grier, who spent a quarter century with the franchise and was in his 10th season as GM. It's undetermined for now if Mike McDaniel will return as head coach, but one thing is clear: Miami is ready to leave no stone unturned in its search for a new executive.

Despite the similar titles, these jobs couldn’t be more different in their responsibilities, priorities, and contributions on set. If you’ve ever found yourself confused about who does what, or even assumed they’re the same role, you’re not alone.