Friction force. There is no such force. But friction exists, we feel it when we walk on the Earth. Friction occurs as a result of pressure and motion, and counteracts them.
Movement appears as a result of pressure. Consequently, two forces of pressure create friction. Friction arises because of the opposite direction of the two pressures.
The strength of the electric current. There is no such force. Because there is no place for the application of force. There are electrical interactions. And they exist only between two or more electrical bodies. With ordinary bodies, electricity does not interact. Because the current does not create a force.
Strength of elasticity. There is no such force. Elasticity is the reaction of the body to pressure.
The strength of Archimedes, it is also a pushing force. There is no such force. The principle of the phenomenon lies in the fact that in the field of gravity all bodies are attracted to the earth. In water, this attraction simply decreases.
Gravity. He's the same weight. There is no such force. All bodies fall to Earth. Consequently, the reaction is the weight of the body.
To apply force, you must use your shoulder.
So far we know the only force is pressure. Pressure is always applied from the outside of the body. Pressure pushes the body. Perhaps the nature of gravity, there is also pressure. It is necessary to check this assumption.
By Force.png: Penubagderivative work: Arnaud Ramey (talk) - Force.png and File:Compound_pulley.svg, Public Domain, Link