Well, yes. Often they become one and the same! Unless one is a gentleman thief.

[A group of pirates then decided to bum-rush Valvatorez and attempt to overwhelm him. Unfortunately for them, once he saw them coming, he vanished briefly into a cloud of dark smoke. And from that smoke, a swarm of bats flew out, cutting through the group of mooks and somehow knocking them all out. The bats quickly converged into another dark cloud, from which Val re-emerged.]

...Well, I am already an instructor. I wonder if there's a market for a pirate school.