Normal Force:The normal force is a contact force exerted by a surface perpendicular to it when another body presses against it.
Friction Force:Friction is a force that opposes relative motion between two surfaces in contact. It acts parallel to the surface and opposite to the direction of motion or attempted motion.
Applied Force:An applied force is a force that is exerted on an object by a person or another object. It can be used to move, stop, or change the direction of an object's motion.