Immunisation is a term used to describe the process of making a person or animal immune to a disease or infection. Synonyms for this term include vaccination, inoculation, and immunization. These words all refer to the practice of artificially stimulating the immune system in order to protect against particular diseases. Other synonyms for immunisation might include immunotherapy, which can refer to any treatment that boosts the immune system, and prophylaxis, which is a medical term used to describe any preventive measure taken to avoid disease or infection. These terms all describe different ways that we can work to protect ourselves against a wide range of diseases and infections.