I'll answer this one for you, Doc!
The term "drone" goes back to the early days of pilotless aircraft which were, for all intents and purposes, big FF models--uncontrolled once launched. The term is still used today, inappropriately, to described UAS used in the military and will soon be used in the civilian and commercial industry. The term "drone" is poorly used today because it implies that the operator just pushes a button and leaves to get a cup of coffee while the aircraft takes off and does its thing. Nothing could be farther from the truth. Preparation for takeoff can take hours because all pieces of equipment e.g. the ground control station, software, antennaes and everthing else must undergo a preflight inspection in addition to the aircraft itself. Allot of the subsystems are automated, but no UAS out there can operate on its own.
And quad-copters are 4 bladed helicopter-like toys.
I personally would like to find a reasonably priced quad-copter with an FPV camera. I think it would be very useful for finding wayward free flight models.