Non-supercell Tornados

I was trying to explain to a friend the other day why we do not refer to non supercell tornados as such. Or rather non mesocyclone born vortexs. I was trying to explain that we refer to non supercell vortexs as landspouts or things like gustnado. I figured I would post it up so others could discuss this topic, and I hope this isnt one of those controversial subjects. And maybe some of us and take the opportunity to discuss the science behind landspouts as well. I cant remember any of the lnks I was going to put up, but if I do I will post them later. I know their is a past discussion steming from last years(later in the year fall I think in kansas)outbreak in southwest kansas I forget the date. Anyway have at it gentlemen! ;)