Damaging Objects. For the purpose of the rules on breaking objects, an object is a discrete, inanimate item like a window, door, sword, book, table, chair, or stone, not a building or a vehicle that is composed of many other objects.
Characters can destroy objects two different ways. A character can:
damage objects with their weapons, tools, and spells.
The GM should use common sense when determining a character’s success at damaging an object. Given enough time and the right tools, characters can destroy any destructible object.
The Right Tools. You might decide that some damage types are more effective against a particular object or substance than others. For example, bludgeoning damage works well for smashing things but not for cutting through rope or leather. Paper or cloth objects might be vulnerable to fire and lightning damage. A pick can chip away stone but can’t effectively cut down a tree. Can a fighter cut through a section of a stone wall with a sword? No
You can also give an object immunities, resistances, and vulnerabilities to specific types of damage. Objects are immune to poison and psychic damage. Objects always fail Strength and Dexterity saving throws, and they are immune to effects that require other saves.
Damage. When an object drops to 0 hit points, it breaks. Certain objects may be particularly challenging to break, and may involve a damage threshold.