##Frame or frameset##
Frame or frameset
The frame is the skeleton of a bicycle. It's the part that all other parts are attached to. (Some parts, like the front wheel, are attached to other parts that are in turn attached to the frame.) A frame plus a fork are often called a frameset. The frameset's geometry determines the bike's handling characteristics.
Frames are usually made of steel, aluminum, carbon fiber, or titanium. Less common frame materials include bamboo, other types of wood, or magnesium alloy.
Aluminum mountain bicycle frame:
Parts of a bicycle frame:
![enter image description here][1]
(Image from wikipedia; credit and legalese) [1]: https://i.sstatic.net/FqByb.png