The phrase aerodynamic precession is most apt, and is intended to draw us away from any idea that gyroscopes are involved. In truth, the varable rotor phase angle (varies with time, with speed, with density altitude, with rate of input, with rotor blade inertia, with hinge offset, with blade chord,......) is a complex motion that tells us how the blade's flapping oscillation compares with the 1 per revolution frequency of the aircraft.
Gareth Padfield (a friend) and Gordon Leishman (an acquaintance) are very respected experts in our field, they would have no problem discussing how rotors behave without once using gyroscopes in the explanation.