Surgery is a process to repair unwanted ruptured areas. The act of performing surgery could also be called a surgery, operation, or just "surgery".  During this context, the verb "operate" means to perform surgery.  The adjective surgical means concerning surgery; e.g. surgical instruments or surgical nurse. The person or subject on which the surgery is performed are often an individual or an animal. A surgeon may be a one that practices surgery and a surgeon's assistant may be a one that practices surgical assistance. A surgical team is formed from surgeon, surgeon's assistant, anaesthetist, circulating nurse and surgical technologist. Surgery usually spans minutes to hours, but it's typically not an ongoing or periodic sort of treatment.  As a general rule, a procedure is taken into account surgical when it involves cutting of an individual's tissues or closure of a previously sustained wound. Other procedures that don't necessarily fall into this rubric, like angioplasty or endoscopy, could also be considered surgery if they involve "common" surgery or settings.