Flammable materials are substances that can easily catch fire and continue to burn in the presence of a flame or heat source. Synonyms for the term "flammable material" include combustible material, ignitable material, and easily flammable material. Other synonyms include inflammable material, fire-prone material, and explosive material. These materials can be hazardous when stored or used improperly and should be handled with care and stored in appropriate containers. The use of these materials also requires proper ventilation and fire safety protocols to prevent accidents and minimize damage or injury. In summary, flammable materials should always be handled with caution and referred to by their proper name to avoid misunderstandings or accidents.