PSE vs GFE

It is time for finding the difference between the two Acronyms I checked the ECCIE acronyms list and it says nothing. What do you ladies and gents consider about each and please explain your reason why.
GFE and PSE are both representations of what an actual girlfriend or a porn star might do. It seems like the definitions of either experience are subjective. As someone who offers GFE and PSE, I think of PSE as including GFE with additional activities that make for a more intense and action packed time. This may include face fucking, deep throat, gagging, lots of sloppiness, cum on face or in mouth, dirty talk, fisting, rimming, and Greek.
Thanks I find it strange that there is no definition of either. After what happened to me several weeks ago I now make sure that GFE is included. PSE is not near as important.