The definition of hydraulic pressure is that of a force per unit area that is measured in pounds per square inch (PSI). Dynamic pressure and static pressure are the two pressure components.
Dynamic pressure is a type of kinetic energy that has its application found in moving water. In hydraulics, differential pressure meters register the pressure points by the resistance found between two points in the pipelines involved. Differential pressure is also known as the pressure drop.
Static pressure is potential energy. This pressure is applied by water that is not moving or that is considered to be at rest. Static pressure is generated by gravitational fields.