Answer:
Energy
the strength and vitality required for sustained physical or mental activity.
Work
In physics, work is the energy transferred to or from an object via the application of force along a displacement.
Potential Energy
potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors.
Gravity
a natural phenomenon by which all things with mass or energy
Kinetic Energy
the kinetic energy of an object is the energy that it possesses due to its motion
