This is a fair question. Terms need to be defined.

An example of a regulated moving part would be the front wheels of (most) cars. They turn from lock to lock under the regulation of the steering wheel.

The car's antenna would be an example of an unregulated moving part. The wind can cause it to bend and vibrate because it isn't rigid. This motion is unregulated.

Or on a portable radio on could consider the station indicator vs the lid of the battery case. The station indicator moves under regulation of the tuning dial. The lid of the battery case is subject to being removed by the application of directed or random forces. It pops loose and may or may not return to its original position. Even if it is the hinged kind, it is still not regulated - merely constrained from becoming lost. It still swings freely in response to external forces.

Note that sufficient force can override regulation. A powerful external force applied to a front wheel can "jerk the steering wheel". This does not negate the fact that regulation is present.

A regulated moving part has a finite range of motion and doesn't move independently of its regulator (unless something is broken or malfunctioning).