In fact, in the simplest way, their basic principle is the same, that is, the same charges repel each other and the different charges attract each other.
Electrostatic induction, sometimes due to the influence of charges in charged objects, changes the spatial order of phase and attracted heterogeneous charges and mutually repulsive like charges, so that the mutual attraction is greater than the repulsive force. In fact, what you said is similar, but you just don't know how to explain it.
In addition, coulomb force's physical explanation,
Coulomb force pointed out that the force between point charges in vacuum obeys Coulomb's law. Knowing the physical explanation, it is very simple to distinguish.
Look at the physical explanation of electrostatic force.
The interaction between electrostatic force and electrostatic charge body.
One is an electric charge, and the other is a charged body.
Remember that the object itself has positive and negative charges. Maybe you call it protons and electrons, and you'll know later. In fact, the electron configuration in an object sometimes changes when it comes to the statement that there are positive charges and holes in a semiconductor, and the so-called charge has been regarded as the smallest divided unit in it, so it is not separated.
As for ls, since it is a substance, it must have mass. No mass seems to violate Einstein's theory of relativity. In fact, you should also know. There is a simple saying in high school, the relationship between quality and energy.
Besides, even if you test spherical things, if they are all points, the spatial position of the charges inside will still change, so there will still be mutual electrostatic force.
I introduced the concept of electric field in college, but I haven't learned it for a long time and forgot it.
You still don't understand what coulomb force is, what electrostatic induction is, one is used to describe objects and the other is used to describe charges. Didn't you find the formula without electrostatic induction? In other words, there will be no electrostatic induction of charges, that is, there will be no uncharged charges, and besides, there will be no so-called recombination of charged particles.
Only electrostatic force is related to it. When electrostatic force is generated, because the object itself is charged, it is more difficult to change the position of microscopic particles in the object itself, so it is difficult to produce electrostatic effect, or it is much smaller than when it is not charged.