Large projectile weapons, in modern usage usually large guns, but also rocket artillery.
An army unit that uses such weapons, or a military formation using projectile weapons, such as archers.
Gunnery.
The design and manufacture of guns, particularly those of a large caliber.
A place where guns are tested, or where people are trained in their use.
The firing of guns.
The science of guns and gunfire, including aspects of bullet flight and impact.