Hadrons constitute a class of subatomic particles characterized by their composition of quarks, which are bound together by gluons. These particles are categorized into several groups based on their quark content and internal structure. The primary types include baryons, which are particles composed of three quarks (such as the neutron and proton), and mesons, which are composed of a quark and an antiquark. The strong nuclear force governs the interactions between these particles, maintaining the stability of atomic nuclei. Studying hadrons is fundamental to understanding the structure of matter, as they represent the stable, force-carrying constituents of atomic nuclei within the Standard Model of particle physics.