For Black Powder (Gunpowder) we have a term and definition in Pyrotechnics.

Most common material used in fireworks; invented by the Chinese around a millennium ago. It is a low explosive consisting of potassium nitrate (KNO3), sulfur (S), and charcoal (mostly atomic carbon). Used to make sound, propel objects, make fuse, and used in other combinations to make a variety of different effects.
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