There are various synonyms for the word "firing material". Some of them include combustible, ignitable, inflammable, kindling, tinder, fuel, and coal. These terms describe materials or substances that can be easily set on fire or used to ignite something else. Combustible materials have the potential to burn when exposed to oxygen, while ignitable materials can be set ablaze with a spark or flame. Inflammable materials are those that can easily catch fire and burn quickly. Kindling and tinder are small pieces of materials used to start a fire, while fuel and coal are larger sources of energy that can sustain flames. Regardless of the term you use to describe it, firing material is essential to ignite and maintain fire.