Ammunition is a term used to describe the materials used in weapons and military equipment. It includes cartridges, which are cylindrical containers that hold a projectile and propellant; BULLETS, which are projectiles fired from guns; GRIST, which is a type of GUNPOWDER; pellets, which are small metal balls used in shotguns; explosives, which are substances that cause a sudden release of energy; armaments, which are weapons and military equipment; SHOT, which is a group of small metal balls fired from a shotgun; GUNPOWDER, which is a type of EXPLOSIVE powder; materiel, which is military equipment; missiles, which are self-propelled weapons; shells, which are hollow projectiles filled with explosives; cannonballs, which are solid projectiles fired from cannons; rounds, which are cartridges; charges, which are explosives; FUEL, which is a substance used to power engines; balls, which are solid projectiles; ARMS, which are weapons; BULLETS, which are projectiles; AMMO, which is short for ammunition; and other related items.