Petards is a term that refers to explosives used for demolition or military purposes. There are several synonyms that can be used in place of this word, including explosive charges, bombs, detonators, and blasting caps. Explosive charges typically refer to pre-packaged explosives used for various purposes, while bombs are larger, more powerful explosives often used for military purposes. Detonators are devices used to trigger an explosion, while blasting caps are small explosive charges used to ignite a larger explosive charge. These terms are commonly used in military and demolition settings, and can be used interchangeably with the term petards.