What are the differences between deterministic forces and thermal agitation?

A force is applied to an object and waxes a movement in a certain direction, which can be experimentally medium, all the forces with this behavior are given deterministic, for example: the force of gravity, the pushing of a body, the electrical force, the magnetic force

Thermal agitation is the result of the movement of the bodies in many directions, this movement is due to the collision of the body with each other, which implies a large number of them and it is not possible to define a specific direction, the name of agitation ends is because it is directly related to the temperara