What is the analogue of force in the case of rotational motion.

The rotational analogue of force is

Moment of inertia is the analogue of mass in rotational motion. But unlike mass, it is not a fixed quantity.Moment of inertia can be regarded as a measure of rotational inertia. Why?

Moment of inertia is the analogue of mass in rotational motion. But unlike mass, it is not a fixed quantity. The moments of inertia of two rotating bodies A and B are I_A and I_B lf ( I_A> I_B) and their angular momentum are equal. Which one has a greater kinetic energy? Explain.