A life buoy is an essential safety device used in water rescue operations. It is also known as a life ring, life preserver, or life saver. These devices are designed to help keep a person afloat and prevent them from drowning. Other synonyms for life buoy include lifebelt, life tube, flotation device, rescue buoy, and water safety ring. Life buoy is the most common term used to describe these devices, but there are many other terms that can be used depending on the context or location. Regardless of the name used, these devices are critical in ensuring the safety of people in the water and should always be accessible in emergency situations.