When players just say "lunge" they are usually referring to this move. The player quickly uppercuts for high damage. This move is highly effective as a counter attack against other special moves. It is less damaging than RDFA, but leaves you far less open making it safer to use.
Staff and Dual Saber Twirl
The player stands still twirling his saber's for a while. Much like a kata, this move leaves the player open to counter attacks, especially from behind, but deals high damage to anyone in front of the player.