The phrase 'burst fire' often refers to a firing mode in firearms where the gun's trigger is pulled once, causing the gun to fire multiple rounds in rapid succession. However, there are several other terms synonymous with 'burst fire'. For instance, 'automatic fire' is often used to describe the same firing mode. 'Rapid fire' is another term that can refer to the same concept, although it can also refer to firing at a quick pace in general. In military contexts, 'volley fire' is sometimes used to refer to a group of soldiers firing in unison, which has similarities to 'burst fire'.