The major difference between the two is that surgery is always used from a medical perspective while there are some operations carried in different fields.\
Main features of a surgery
From a medical perspective, surgery refers to a procedure that involves an incision on the body to repair, remove or to replace a part. The aim of surgery is to prevent a disease or to cure it. A surgery also refers to a place where surgery is done. In the same vein, surgery can also be used to refer to a private place where a doctor practices his or her work. Many people visit a surgery for treatment as well as other services related to medical care.
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Main features of an operation
An operation is a surgical procedure which denotes method or practice whereby action is done or performed. This is a medical procedure designed for a specific result that is desired. As a noun, operation refers to the method whereby a device performs certain functions. The term denotes action whereby a function is performed. The machine performs an operation of a particular task on its own or it is operated by a human being. An operation can also refer to different types of actions that can be undertaken by people. For instance, military and business operations are specifically undertaken for different purposes outside the medical field. When an operation is undertaken, certain goals are expected to be achieved.