The term 'computer button' refers to the various physical buttons found on a computer, such as the POWER button, RESET button, ICON button, and escape button. The POWER button is a five-letter word that is used to turn the computer on or off. The RESET button is also a five-letter word and is used to restart the computer. The ICON button is a four-letter word and is used to open a program or file. Lastly, the escape button is a three-letter word and is used to exit out of a program or window.