When we eat or drink, we also tend to swallow air. When the food gets digested this air gets pushed out back through esophagus and stomach. This release of gas often comes with a not- so- cool sound called burp. So, in essence burping is a very important function of body wherein it tries to expel the unwanted air (or gases found in the air) from the body. Burping is also known as belching, ructus or eructation.
