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Gravity is a natural phenomen by which all things that contain energy or mass are attracted to one another. It has an infinite range, though as things get further away, its effects become weaker.

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Carstea Mihnea
Like gravity, electric force "acts at a distance". The idea that a force can "act at a distance" is pretty mind-blowing, but it's what nature really does.
The repulsive or attractive interaction between any two charged bodies is called as an electric force. Similar to any force, its impact and effects on the given body are described by Newton's laws of motion. The electric force is among the list of other forces that exert over objects.

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Gravity is most accurately described by the general theory of relativity (proposed by Albert Einstein in 1915), which describes gravity not as a force, but as a consequence of masses moving along geodesic lines in a curved spacetime caused by the uneven distribution of mass.  Gravity (from Latin gravitas 'weight'), or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are attracted to (or gravitate toward) one another. On Earth, gravity gives weight to physical objects, and the Moon's gravity causes the ocean tides. The gravitational attraction of the original gaseous matter present in the Universe caused it to begin coalescing and forming stars and caused the stars to group together into galaxies, so gravity is responsible for many of the large-scale structures in the Universe.

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Frictional force refers to the force generated by two surfaces that contact and slide against each other. These forces are mainly affected by the surface texture and by the quantity of force requiring them together. The angle and position of the object affect the volume of the frictional force.
If an object it's placed against another object, then the frictional force will be the same as the weight of the object.
For example, when a small amount of force is applied to a heavy chair, it does not move. This means that a force is being applied from the opposite direction and has a greater magnitude than the external force. In order to move the chair, a person has to apply a force that has a magnitude greater than the magnitude of the frictional force.

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Friction is the resistance to motion of one object moving relative to another. Friction plays an important part in many everyday processes. For instance, when two objects rub together, friction causes some of the energy of motion to be converted into heat. This is why rubbing two sticks together will eventually produce a fire.

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Emir Yüksekdağ/İlke Kılıç/İzmir Meslek Eğitim Merkezi

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Emir Yüksekdağ/İlke Kılıç/İzmir Meslek Eğitim Merkezi

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If you want to collect what is told briefly; The force that occurs between the surface in contact with the object and makes the movement of the object difficult is called the friction force.

The frictional force is always in the opposite direction to the direction of motion, and this force is a contact force.

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Ece M.  İzmir Vocational Education Center  (İlke Kılıç)

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Ece M.  İzmir Vocational Education Center  (İlke Kılıç)

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Frictional force is a type of force that can be viewed as a barrier to movements. It occurs in the opposite direction of the movement. Although they hinder movements, they are also useful in many ways. For example, we would not even be able to walk on the road without the friction force.

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Cansu C. İzmir Vocational Education Center( İlke Kılıç)

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Cansu C. İzmir Vocational Education Center( İlke Kılıç)

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Frictional force is the name given to the force that occurs between two objects in contact that opposes the motion. Motion is not required for this force to occur, but the frictional force in motion (kinetic) is different from that in no motion (static).

Let's say we are trying to move a table horizontally. First we struggle a bit, then when the table starts to move we can easily drag it. This shows that the friction force is less when it is in motion than when it is at rest, and it is understood from this result that it is necessary to divide the friction into two as kinetic friction force and static friction force.

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İzmir Vocational Education Center

Friction force and running

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İzmir Vocational Education Center

Friction force and running