combust,
burn cause to become violent or angry; "Riots combusted Pakistan after the U.S. air attacks on Afghanistan"
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Wiktionary
Substantiv
coal -
A black rock formed from prehistoric plant remains, composed largely of carbon and burned as a fuel.
coal -
A piece of coal used for burning. Note that in British English the first of the following examples would usually be used, whereas in American English the latter would.
Coal is a readily combustible black or brownish-black sedimentary rock normally occurring in rock strata in layers or veins called coal beds. The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. Coal is composed primarily of carbon along with variable quantities of other elements, chiefly sulfur, hydrogen, oxygen and nitrogen.
OmegaWiki Dictionary
Ω
coal The natural, rocklike, brown to black derivative of forest-type plant material, usually accumulated in peat beds and progressively compressed and indurated until it is finally altered in to graphite-like material.
