In some circumstances, wording only can actually changes a lot of things
Activity lead to the idea that you "have to trade", wich is not the signification of this parameter as you know it.
Regularity lead to the idea that you need to be coherent, no matter the rotation. And this is what this parameter asks to traders! Only be consistent and stable in your behavior, at all time (or let's say, at least, as much as possible depending of market conditions vs trade methodology)