A scratch occurs when the cue ball enters a pocket, a jump occurs when the cue ball or any numbered ball leaves the table. A foul is any illegal shot. Both a scratch and a jump are almost always fouls.
In 8-ball:
A scratch occurs when the cue ball enters a pocket, a jump occurs when the cue ball or any numbered ball leaves the table. A foul is any illegal shot. Both a scratch and a jump are almost always fouls.
In 8-ball: