General:
* Typewriter (especially for older, mechanical keyboards)
* Keypad (for smaller keyboards with fewer keys)
* Input device (a more technical term)
Specific types:
* QWERTY keyboard (the most common layout)
* Dvorak keyboard (an alternative layout)
* Ergonomic keyboard (designed for comfort)
* Wireless keyboard (connects without wires)
* Gaming keyboard (designed for gaming)
Figurative:
* Piano (referring to the arrangement of keys)
* Buttons (used casually for keys)
The best word to use depends on the specific situation and the intended meaning.