Pragmatics addresses the question, "Is the communication doing what we intended it to do?"
Semantics (Language Content) is analogous to the ammunition for a gun.
With just Form and Content alone, there is enough linguistic skill to make communication possible. The same is true for a gun and bullets. With these, one is able to shoot at something.
But give a gun to a person who does not know the rules of its use and tragic life altering consequences can occur.
No less is true of language. If we don‰t understand the rules of its use we can seriously hurt ourselves and/or others. The rules that apply to the use of language are called Pragmatics.
The basic question in Pragmatics is, "Is the communication doing what we intended it to do?"
There are three factors effecting the outcome of a communication.