The ball on top of a stair post is commonly referred to as a "newel cap" or "newel ball." It is often decorative and serves to complete the look of the newel post, which is the upright post at the bottom or top of a staircase. Newel caps can come in various styles and materials, contributing to the overall aesthetic of the staircase.
a newel post
A "Truck."
Table Top
A simple ball or plate on top of a flagpole is called a truck. More elaborate designs can be called a finial.
a finial
its called a truk
A Truck
She had to climb the stair to reach the top floor where she caught him staring out of the window.
At the top of a lighthouse is a light, or beacon.
The mayans they called it pok ta top
It is called a ball and sits on top of the truck.ANS2:The ball IS the truck. The pole was topped with other shapes of trucks, including balls on plates and eagles but those have mostly been abandoned because the ball is the shape that is least likely to cause the flag to tangle.
No