The stall would break and your right wing would drop and the airplane would spin to the right.
...in that moment, when the right wing drops,...the nose begins to yaw to the right, reversing the slip to the left to a yaw to the right.
...if, at that moment, you have enough rudder authority to stop the yawing moment to the right, you would prevent the spin.
...you might say you wouldn't have enough rudder authority to stop it, and you may be right; depends on the airplane and such.
...but if you go sharp forward elevator at the same moment as the right wing drops to get more rudder authority to prevent the yaw, the spin will not develop.
...so I say, it does matter that you know the difference between slip and skid.
...you are probably right that it does not matter to the untrained pilot. A precisely controlled slip is a beautiful thing - not scary at all, if properly done. There will be no wallowing of the nose, or wallowing of the bank, or wobbling of the flight path. There is a smooooth slide sorta sideways down to the runway. No yawing of the nose, except as needed and intended.
...it is precisely the nose yawing action that causes the asymetrical lift that starts the whole process.