Can you name a 3rd type of keyboard instrument and how it’s sound was created?

A keyboard instrument is a musical instrument played using a keyboard, a row of levers which are pressed by the fingers. The most common of these are the piano, organ, and various electronic keyboards, including synthesizers and digital pianos. Other keyboard instruments include celestas, which are struck idiophones operated by a keyboard, and carillons, which are usually housed in bell towers or belfries of churches or municipal buildings.

What do you mean by this?

Answer/// geometric period, archaic period,and classical period; geometric period is usually dated from 1000bcthe archaic and classical are 336bc to323bc;