Deliberate violence towards chairs, tables or other items of furniture during a theatrical production. The most common form of furniture abuse is knocking over chairs or throwing them across the stage. Frequently seen in operas, furniture abuse is usually perpetrated by characters as an expression of rage or great despair, although some cynics claim it merely shows a lack of imagination on the part of the director
The term gun furniture is used more often for AR-type weapons but also to a lesser extent other rifles and handguns this term refers parts which affect the way the firearm is held and supported. The pistol grip, stock, and handguard are all considered part of the furniture. This does not include accessories like scopes, lights etc.
I made some upgrades to my AR-15 with some new gun furniture; I'm a fan of the wood so I got some nice custom matching rosewood furniture.
When your upstairs neighbors are rearranging their furniture at random times throughout the day, so it sounds like thunder. Sometimes people actually mistake furniture thunder, for real thunder itself.