The word "incendive" corresponds to things that have a tendency to catch fire or ignite easily. Some synonyms for incendive include "flammable," "combustible," "inflammable," and "ignitable." Other related terms are "infectious," "incendiary," and "explosive." In scientific terminology, the term "pyrophoric" is used to describe materials that ignite spontaneously upon contact with air or moisture. Combustible materials, such as wood or paper, have a high likelihood of catching fire, while flammable materials, such as gasoline or propane, are easily ignited by a spark or other source of heat. Knowing these synonyms can help individuals better understand safety precautions when handling or storing materials that have a high risk of catching fire.