The term 'gunshot sound' can be described by three words: POW, BANG, and BOOM. POW is an onomatopoeia for a sharp, quick sound, usually associated with a gunshot or explosion. BANG is another onomatopoeia, this time for a louder, more intense sound, also associated with a gunshot or explosion. Finally, BOOM is an onomatopoeia for a deep, reverberating sound, often used to describe the sound of a large explosion or cannon fire. All three words are commonly used to describe the sound of a gunshot.