I think thats about right. I think that freestyle should apply to a plane that can do f3a to almost the same standard as it can 3D, or just a plane that can entertain with a selection of smooth gracefull aerobatics combined with some wild 3D stuff to get the crowd on their feet( IMAC planes, majestic, capiche, funtana and so on).
As for funfly= limbo dancer, cougar.
3D funfly= plane that has a fat wing that flies slowly and does slow 3d aerobatics, very manuverable, that is not a limbo dancer type plane.