A slave is usually a person who doesn’t want to be in charge or control at all, they need someone stronger to be the leader.

A submissive I find, is someone usually that has to be strong in most aspects of their lives, like a Director, Boss, team leader, etc, someone responsible for others and is carrying a huge amount of weight on their shoulders, they need someone safe to fall apart Infront of that can just Tell them that they are not in charge and they don’t have to make a decision.

A Dominant /Mistress takes that roll.