well, when playing badminton, you always serve underarm. If you serve over arm, then you lose the serve.
in badminton you serve from the line closest to the net an you must serve underarm. overarm or not from the line is a foul serve.
Basic shots in Badminton are: High Serve, Low Serve, Overhead Clear, Underarm Clear, Net shot, Smash, Drop Shot
It is called a smash.
It is when you hit the shuttlecock with a racquet by using the backhand stroke
it is called a smash