Key difference: Pressure and Stress are two different types of forces that are constantly working against each other. Pressure is a type of external force that is exerted over a surface area of a material, whereas stress is a type of internal force that acts over a cross sectional area within the material.

Pressure and Stress are two different types of forces that are constantly working against each other. Force is an unbalanced force that produces acceleration. There are two main types of forces: internal force and an external force.

Pressure is a type of external force that is exerted over a surface area of a material, whereas stress is a type of internal force that acts over a cross sectional area within the material.

Essentially, pressure is the force that is exerted by an object on the area that it impacts, whereas stress is the force that an object pushes back with when it is being deformed, i.e. has force acting on it. For example: Imagine a ball hitting a wall. As the ball hits the wall, it exerts pressure on the wall. Stress the force that the wall exerts back. This is what allows the ball to bounce back.

Comparison between Pressure and Stress in Physics:

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