The drum is the spinning section of the machine where you load your clothes into.

the difference between a drum kit and a drum machine is that a drum kit you perform naturally with your hands using sticks to change the pitch on whether it is high or low, and a drum machine is like a little electronic board where all you have to do is choose which percussion instrument you want and edit the way the rhythm sounds. personally i prefer the drum machine, much easier ;)
a drum kit is an instrument that you can play. a drum machine is a computer that generates a drum track. drum machines are commonly used in techno and hip-hop.

a roland cr78 rhythm machine combined with a tr-808

The cast of The Drum Machine - 1989 includes: Doug Scroope as Drummer

No. But with the drum machine programed and playing, you can still play along on the piano.