Is the Pulvis a Pulvus or Ac?

When you have someone unlike swing catlus tos a pelvis thorax, when they make a back swing, you can make the center pressure move around in multitude ways. A ala a vj sing or can montgomery shir oe, how would you classify like a ac then zac is front post esn under goffos because his pulvis moves towards the target. You see that zack johnson's a good example of ta exa. Heis, that's what we call a basically all he's doing is he's counted creating a counter swivel.