- The seat of a chair is its flat rectangular or circular surface. Some designers attach a cushion over the seat to make it more comfortable.
- The splat of a chair is the upright flat panel that serves as a back rest.
- Chairs usually have four legs, although some chairs only have three legs. The legs provide the basic support for the chair seat and elevate it off the ground.
- Chairs were once only accessible to the elite, according to the FineWoodWorking.com article "A History of Chairs" by Graham Blackburn. The lower classes sat on stools, backless versions of the chair. Cathedra is the Latin word for chair, and Blackburn says cathedral referred to a church that held a bishop's throne.