Definitions for "Biofuels"
Fuels made from biomass, typically plant based (cellulose), resoures. Biofuels include ethanol, biodiesel, methanol, bio-oil, etc.
Fuels derived from Solid, liquid or gaseous substances produced from organic matter.
Fuels derived from biomass - organic plant matter, in particular wood and biogas, either deliberately grown or from waste products.