The term 'bomb ingredient' can refer to two different substances: napalm and TNT. Napalm is a flammable liquid composed of gasoline, benzene, and polystyrene, which was used extensively in incendiary bombs during World War II. TNT, or trinitrotoluene, is an explosive compound that has been used in military explosives since the late 19th century. Both substances are still used in modern warfare, though their use has become more limited due to their devastating effects.