Fermions include elementary particles such as quarks, electrons and neutrinos. Charm quarks are found in hadrons, which are subatomic particles made of quarks. The dynamics of the quarks and gluons are controlled by the quantum chromodynamics Lagrangian. This effect confines quarks within hadrons. Baryons are hadrons containing an odd number of valence quarks (at least 3). Ordinary matter is composed of two types of elementary particles&colon; quarks and leptons. However, both protons and neutrons are composite particles composed of elementary particles called quarks. Neutrons consist of one up quark and two down quarks. In layman's terms, they "glue" quarks together, forming hadrons such as protons and neutrons. All quarks and gluons in QCD interact with each other through the strong force. In particle physics, preons are point particles, conceived of as sub-components of quarks, and leptons. Mesons are hadrons containing an even number of valence quarks (at least 2). They are baryons containing no up or down quarks. Recognizing faces as attractive, like recognizing certain arrangements of leptons, quarks, etc. It is made up of two strange quarks and a bottom quark.