Well, as far as I know, the front chainring is mounted to a freewheel mechanism, rather than having the rear cogs mounted to the freewheel.

I think what that means is, is that if you stop pedaling while riding, the entire drivetrain still goes around while your cranks stay stationary

Hurts the brain, doesn't it.

It also means that the rear cogs are 'bolted' to the rear wheel like a track bike, and that you can change gears even when you're not pedaling.

I think.