Here's a breakdown:

* Force: A push or pull that can change the motion of an object.

* Area: The amount of surface covered by an object.

Pressure is calculated by dividing the force by the area over which it is applied:

Pressure = Force / Area

Units of Pressure:

* Pascal (Pa): The standard unit of pressure in the International System of Units (SI). 1 Pascal is equal to 1 Newton per square meter (N/m²).

* Other units: pounds per square inch (psi), atmospheres (atm), millimeters of mercury (mmHg)

Examples of Pressure:

* Air pressure: The weight of the atmosphere pushing down on the Earth's surface.

* Water pressure: The force of water pushing against the walls of a container or pipe.

* Blood pressure: The force of blood pushing against the walls of blood vessels.

Let me know if you'd like more information on pressure or any related concepts!