Input device and Joystick

Input device noun - A device that can be used to insert data into a computer or other computational device.

Joystick and input device are semantically related. In some cases you can replace term "Joystick" with "Input device", this terms are similar.

Joystick noun - A manual control consisting of a vertical handle that can move freely in two directions; used as an input device to computers or to devices controlled by computers.

Input device and joystick are semantically related. Sometimes you can use "Input device" instead a noun "Joystick".