whop (v)
wham (v)
whack (v)
wallop (v)

Definition: hit hard
Example: The teacher whacked the boy.

whang (n)
whack (n)
rap (n)
knock (n)
belt (n)

Definition: the act of hitting vigorously
Example: he gave the table a whack.

whack (n)

Definition: the sound made by a sharp swift blow