I'll take "words that sound like some university eggheads just made them up" for $800, Alex.
:-)
Sheesh... scientists. :-)
We don't discover anything, we just point to things and give them names.
EGE; it could have been. however those very terms come from the US Army Corps of Engineers 1987 Wetland Delineation Manual.
As you and others here know first hand, it takes the Army to write a whole manual on figuring out what to call an area that makes your feet wet.