👉 The term "furnage" is a common English word that refers to the process of burning wood or other materials in order to produce heat, light, or warmth. It can be used as an adjective or a noun, depending on the context. In this case, "furnage" could be used as either an adjective or a noun. If we are referring to a process that involves heating something with fire or heat, it is more likely to be considered an adjective. For example: