Health physics is a branch of science that deals with the application of physics principles to ensure the safety of people and the environment from potential radiation hazards. There are several synonyms for the word "health physics" that are commonly used in scientific literature and discussions. These include radiation protection, radiological protection, medical physics, nuclear safety, nuclear health physics, and dosimetry. Radiation protection and radiological protection are the most commonly used synonyms for health physics since they convey the scientific discipline's purpose to protect people from ionizing radiation. Medical physics is another synonym that emphasizes health physics' clinical applications in medicine. On the other hand, nuclear safety and nuclear health physics emphasize the protection of the public and environment from nuclear power and nuclear weapons. Finally, dosimetry refers to the measurement and quantification of radiation doses, an essential component of health physics.