i think its just semantics and made up names that does nothing but muddy the water even further for those new to abilities by those who have no abilities but want to act like experts on the matter...( just to clarify though, i believe we all have the potential to develop said abilities but due to life, skepticism, religious beliefs, etc... most hit a wall along the way early on so later in life it just becomes a curiosity or hobby )..........learning on ones own or through the new age section of the local bookstore is a long rocky road.... if abilities surface or the curiosity is strong enough its best to find a reliable teacher or guide.... though that can be difficult also , but breaking away from the media and flavor of the hour is the first thing one should do...........