Keypad
Part of speech: noun
Definition: A small board with keys primarily used for tactile input into a machine.
Keyboard
Part of speech: noun
Definition: A set of keys used to operate a typewriter, computer etc.A component of many instruments including the piano, organ, and harpsichord consisting of usually black and white keys that cause different tones to be produced when struck.A device with keys of a musical keyboard, used to control electronic sound-producing devices which may be built into or separate from the keyboard device.
Part of speech: verb
Definition: To type on a computer keyboard.