Comburent is a term used to describe a substance that has the ability to undergo combustion. It is often used in reference to fuels and additives that enhance the combustion process. Synonyms for comburent include oxidizer, fuel, combustible, ignitable, flammable, and reactive substance. Oxidizer refers to a substance that facilitates the reaction of combustion by providing oxygen, while a fuel is any substance that burns to produce heat or generate energy. A combustible material is one that is capable of being ignited and burned, while an ignitable substance can be set on fire. Flammable substances are those that catch fire easily, while reactive substances undergo chemical reactions that produce heat and light.