(a) What are the differences between a short corner and a long corner in hockey? (b) What will be…

(a) What are the differences between a short corner and a long corner in hockey? (b) What will be the referee's decision if a player raises the bottom part of the stick above his shoulder while attempting to hit the ball? (c) What will be the decision of the umpire in Field hockey if the ball is hit from outside the circle and goes into the goal?