Quantum mechanics is a major branch of physics that deals with the behavior of particles at the atomic and subatomic level. It is a vast field that encompasses a variety of sub-disciplines, including quantum theory, wave mechanics, and quantum physics. However, there are several synonyms that are used to describe quantum mechanics. One such term is quantum physics, which refers to the study of the physical phenomena that occurs at the quantum level. Other synonyms include quantum theory, quantum mechanics, quantum field theory, and quantum electrodynamics. All these terms describe the same field of study that has revolutionized our understanding of the universe and the fundamental laws that govern it.