The stator is the stationary outside part of a motor.

The rotor is the inner part which rotates.

In the motor animations, red represents a magnet or winding with a north polarization, while green represents a magnet or winding with a south polarization.

Opposite, red and green, polarities attract.

Brushless dc motor

A brushless dc motor has a rotor with permanent magnets and a stator with windings.

It is essentially a dc motor turned inside out.

The control electronics replace the function of the commutator and energize the proper winding.