The verb "to hang" can mean several things in English. First, it is used when we talk about hanging something on a wall or other place. For example, "I hang my coat on the hook". Here "hang" shows that the coat is not lying on the floor, but hanging.
Second, "to hang" also means to hang something, as in the case of pictures or posters. For example, "We need to hang the new poster in the living room".
Interestingly, "to hang" can also be used in more complex situations. For example, if we are talking about how someone spends time, we can say "I was hanging out with my friends".
So "to hang" is a very versatile word that can mean different things depending on the context!