Question

the question is how to define the relation between angular velocity and relative velocity​

Answer 1

angular velocity refers to how fast an object rotates or revolves relative to another point, i.e. how fast the angular position or orientation of an object changes with time...

Relative Velocity is is the velocity of an object or observer B in the rest frame of another object or observer A.

Answer 2

Angular velocity is rate at which object is rotating around an axis.

Relative velocity is simply how fast and in what direction an object is moving.