Special Circumstance Weaponology is the concept that any given weapon may not be suitable for its intended purpose for certain situations and that it must be used in an unconventional manner to be effective.
Additionally, it’s the modification of an existing weapon or the invention of an entirely new one in order to accommodate for specific situations.
Improvisational Weaponology is the concept that a weapon is just a tool and anything can be used as a tool. This infers that any object, no matter how innocuous or subtle, can be used as a weapon.