The opening tennis shot is an important part of the game. It is the first shot of the point and can set the tone for the rest of the rally. The two words that describe this shot are 'SERVE' and 'SERVICE'. SERVE is a five letter word and SERVICE is a seven letter word. A SERVE is a shot that is hit with a racquet and must land in the diagonally opposite SERVICE box. A SERVICE is a shot that is hit with a racquet and must land in the diagonally opposite SERVICE box, but it is also the name of the point when the SERVE is being played.