Perhaps to simplify further:
Simple aircraft: Sometimes fly a VOR radial, then perhaps you want to fly a track. So you would use a VOR receiver to fly a radial then a wind corrected heading to get a track. You know where you are, not the aircraft.
Complex aircraft: Aircraft tells you where you are. The aircraft does many things in the background to tell you where you are with the greatest accuracy possible. (You should always know where you are too). The aircraft will tune radio aids in the background to help tell you know where you as accurately as possible. The radio position in secondary to your computer produced position.