The gun occurs as mechanical device that fires projectiles at high velocity, utilizing the propellent like gun powder or compressed air.

A term gun is typically utilized as a equivalent word to firearm, but around its supplementary technical indicator usage refers single to artillery that fires projectiles at the high speed along a flat flight, like field guns, tank guns and anti-tank guns, and naval guns. Howitzers, mortars, and completely hand-handheld small-arm come excluded from either this definition. A exception to this is the shotgun, which is h&-held, has the smooth wore and fires a cartridge of pellets.

A word gun is besides applied to a bit of or so mistily gun-prefer tools, glue gun for example.