<<Actually, A turbocharger, besides usually being exhaust driven, uses
vaned wheels to move a large volume of air>>

Not besides Dennis---alway's.

Turbocharging is as exactly as you have described the componet , and
function.

<< Superchargers are usually rotary screw or lobe pumps, belt driven.
The major significance is that they are positive displacement pumps. >>

And can also be flat lobed counter rotating blades,andthey can be gear
driven.
But overall your n the money here.

The use of the word's turbo supercharger as Andrew used is correct, if
he was using it to describe a V-1710 Allison, or a Rolls Marlin aircraft
that was in a P-40, P-38, P-51-B, P-51 D and we were back in 1941.

This is the terminology of the times, and in fact these engine's used a
gear driven blower.
No turbo was used at all, until Allison came out with the V-1710 E-6
aircraft engine still with the gear driven supercharger, and also with
twin exhaust turbo's besides packed onto the engine.

It's just a play on words back from the 40's from down under,  but a
blower will always be a belt driven, or gear driven supercharger, and a
turbo is an exhaust boost.

Maybe Andrew is flying his VW's at 35,000 feet and needs some more HP in
the thin air.

I didn't know a Allison / Rolls-Merlin could be shoe horned into the
back of a Transporter/ Caravelle / Vanagon.

I'd like to check that out.  : )