The term "cyberknife" refers to a medical device used for treating cancer using precise radiation therapy. There are several synonyms used to describe this type of treatment, such as "stereotactic radiation therapy," "radiosurgery," "stereotactic body radiation therapy," and "SBRT." These synonyms are often used interchangeably with "cyberknife" since they all relate to the same type of treatment for cancer patients. The use of these synonyms is beneficial as it allows for clearer communication between healthcare professionals and patients, as well as providing a broader range of knowledge and understanding of the available treatment options for cancer.