A grenade is an explosive weapon typically thrown by hand, but can also refer to a shell shot from the muzzle of a rifle or a grenade launcher. A modern hand grenade generally consists of an explosive charge ("filler"), a detonator mechanism, an internal striker to trigger the detonator, an arming safety secured by a transport safety. The user removes the transport safety before throwing, and once the grenade leaves the hand the arming safety gets released, allowing the striker to trigger a primer that ignites a fuze, which burns down to the detonator and explodes the main charge.
Replica WW2 Hand grenades on display
Hand grenades filled with Greek fire; surrounded by caltrops (10th–12th centuries National Historical Museum, Athens, Greece)
Mongolian grenade attack on Japanese during Yuan dynasty
Seven ceramic hand grenades of the 17th Century found in Ingolstadt Germany
An explosive weapon is a weapon that uses an explosive to project blast and/or fragmentation from a point of detonation.
Several grenades and land mines on display in Hanoi
Explosive aircraft ordnance, among other aircraft payloads, at the Flieger Flab Museum