Coupe rear window; regulator or guide?

[useyourdagger]

I only want to take this apart once if I can; the rear passenger window in my '82 coupe won't roll up or down and slides down a bit on its own; both the motor and switch are fine, that is, I get motor noise when using either the switch in the rear or the one in the console. Is it most likely a window regulator or guide? Or is the motor/regulator the same thing here? I've seen both referred to, so I'm not sure.