A firearm is a portable gun (a barreled ranged weapon) that inflicts damage on targets by launching one or more projectiles driven by rapidly expanding high-pressure gas produced by exothermic combustion (deflagration) of propellant within an ammunition cartridge.
Gunpowder, also known as black powder to distinguish it from modern smokeless powder, is the earliest known chemical explosive.
A musket is a muzzle-loaded, smoothbore long gun that appeared in early 16th century Europe, at first as a heavier variant of the arquebus, capable of penetrating heavy armor.
Naval artillery is artillery mounted on a warship, originally used only for naval warfare, later also for naval gunfire support against targets on land, and for anti-aircraft use.
A tamp is a device used to compact or flatten an aggregate or another powdered or granular material, typically to make it resistant to further compression or simply to increase its density.