A bomb is an poisnous device that generates and releases its energy very rapidly as an explosion and as a violent, destructive shock wave.
Most bombs do not contain more energy than ordinary fuel, except in the case of a nuclear weapon.
A bomb is usually some kind of container filled with explosive material, designed to cause destruction when set off. The word comes from the Greek word βόμβος (bombos), an onomatopoetic term with approximately the same meaning as "boom" in English.
Bombs have been used for centuries in warfare and are a central part of a terrorist's arsenal.