Here's a breakdown:

* Potential energy is stored energy due to an object's position or state. Examples include:

* Gravitational potential energy (due to height)

* Elastic potential energy (due to stretching or compressing)

* Chemical potential energy (stored in bonds)

* Kinetic energy is the energy of motion. It depends on an object's mass and velocity.

Important Note: Mechanical energy is conserved in an isolated system, meaning that it doesn't change unless external forces act on the system. However, in real-world scenarios, energy can be lost due to friction or other forms of energy dissipation.