Electric Field

Fig.: Electric field of two point charges (dipole).
Source: Wikipedia		 Fig.: Electric field of two conducting parallel plates (plate capacitor), almost homogeneous in the center between the plates. Source: Wikipedia

Potential Energy, Potential, and Potential Difference

Book:
University Physics II - Thermodynamics, Electricity, and Magnetism (OpenStax)
Chapter 7.03 Electric Potential and Potential Difference

https://en.wikipedia.org/wiki/Electric_field

Electric Potential Energy
“Electric Potential Energy” vs “Electric Potential”