Travelling = If the player takes more than 1 step without bouncing the ball.
Double dribble = The player dribbles, stops the ball with 2 hands, and then dribbles again.
Goaltending = A defensive player interferes with the ball as it is in a downward flight above the ring.
Back court violation = After the basketball passes the halfway line of the court, the offensive team cannot take the ball back to their own half.