Carpus
Part of speech: noun
Definition: The group of bones that make up the wrist.
Wrist
Part of speech: noun
Definition: The complex joint between forearm bones, carpus, and metacarpals where the hand is attached to the arm; the carpus in narrow sense.
Example sentence: I grip very close to the butt of the racket. This allows me to get a lot of wrist action to create more spin and whip.