Tinder fungus, also known as Fomes fomentarius, has various synonyms that help describe its features and properties. For example, it is commonly referred to as horse's hoof fungus, due to its horseshoe-shaped appearance. It is also known as false tinder fungus, as it can be used as a substitute for traditional tinder. Another synonym for this mushroom is amadou, which is a French word that means "tinder" or "fungus." This is fitting, as tinder fungus has been used for centuries as a firestarter, insulation, and medicinal remedy. Other synonyms for tinder fungus include German yeast, laetiporus, and Fomitopsis. Whatever you call it, this unique and versatile fungus has proven to be essential to both survival and folk medicine.