The term "blasting powder" refers to an explosive substance used to break up solid materials such as rock, soil or concrete. Synonyms of blasting powder include dynamite, explosive, gunpowder, TNT, nitroglycerin, and black powder. Dynamite is a type of explosive material consisting of nitroglycerin and absorbent material made of sawdust, clay, or diatomaceous earth. While gunpowder is a mixture of saltpetre, sulfur, and charcoal used in firearms, TNT or trinitrotoluene is a powerful explosive commonly used in military applications. Nitroglycerin is a highly explosive liquid used in the production of dynamite, and black powder is a type of gunpowder used in explosives and fireworks.