String theory corresponds to a theoretical (As the name implies) framework introduced in physics. This framework share similarities with particle physics, as it presents point like particles (from particle physics) as one-dimensional objects, these objects are said to be string. They are stored in the framework described above. String theory describes the behavior of these strings through space. It also determines how these strings interact with each other. It a string is observed on a larger scale than standard string scale, it may look very similar to any ordinary particle. The particle that is being observed will hold mass, charge and other string properties that are determined according t their vibrational state. Graviton is corresponded by one of many vibrational states of string theory. Graviton is simply said to be a quantum mechanical particle, which is responsible for carrying gravitational force. According to this statement, it can be said that string theory focuses mainly on quantum gravity thus it is a theory of quantum gravity.