Canulation is a medical procedure where a tube is inserted into a vessel or a cavity of the body. It is a crucial procedure done to administer medication, fluids, or blood products, and is commonly called cannulation. The process goes by several synonyms that describe it as a non-surgical intervention, such as catheterization, venous access, and vascular access. Doctors, nurses, and paramedics use these synonyms interchangeably, and the word they choose depends on the situation. Whatever the term used, canulation is an essential and necessary procedure in modern medicine, and its efficient and safe execution saves countless lives every day.