Light
Weight refers to the gravitational force acting on an object. It is the measure of how heavy an object is and depends on both the mass of the object and the acceleration due to gravity.
The amount of matter in an object, which remains constant regardless of location.
The support force exerted by a surface that prevents an object from falling through it.
Frictional Force: A resistive force that opposes motion when two surfaces are in contact with each other.