Electric Potential Energy
Electric potential energy is a form of potential energy that results from conservative Coulomb forces.  An object may have electric potential energy based on its own charge and its position relative to other electrically charged objects.
Electric potential energy describes the potential energy in systems with electric fields that change over time and electrostatic potential energy describes the potential energy in systems with constant electric fields.
Electric potential energy is measured in Joules and often measured in electron volts (1eV = 1.602 x 10^-19 J).

Electrostatics
This week in Physics, we learned about electrostatics.  Electrostatics is defined as the study of stationary electric charges or fields as opposed to electric currents.  The electric charges dealt with in this branch of Physics are positive, negative, and neutral charges.  Like charges repel and unlike charges attract.  For example: positive repels positive but attracts negative.  However, neutral charges attract to positive and negative charges but do not have any effect on other neutral charges.

As I unloaded my laundry from the dryer into my wash basket, I noticed that some of my clothing had stuck together.  I concluded that the friction caused by the tumbling dryer "charged my clothes".  The unlike charges attracted and made some of my clothes stick.  Although I can't figure out what charges are involved, it is clear that there are multiple charges present.