I don’t pretend to be an expert on salt (though I have certainly listened to the testimony of experts on salt), but I do know there are different compounds that all fall under the general heading of “salt,” despite some of them not being salt at all. And that heading is probably one coined by a layman like myself.

As far as whether the other compounds are responsible for corrosion the way tradition salt would be, I have no idea!

Probably salt on roads. Sea air kinda rots everything, salty roads just the bottom.