Sure thing (perhaps better in the Tai Chi thread?). From what I understand, the broadsword is the first weapon learned in Tai Chi. It provides a foundation for the sword. The broadsword is characterized by more sweeping motions, and is not as intricate in motion as the sword. The broadsword is single edged, and in some movements, the non-sword arm grasps the back of the broadsword, and theoretically can hold onto the broadsword when letting go of the handle. (note that the broadsword I am referring to is not the tai chi broadsword like the one at martialartsmart, but something similar to kung fu broadswords. I have not seen any internal style broadswords for sale on-line) The Wu style broadsword includes a few small "leaps", and has more kicks than the sword. Training with the broadsword gets the student comfortable with using a weapon, and introduces blade control and using the weapon as an extension of the body. The sword form is quite different than the broadsword. The sword is used in a more "refined" manner, that is, the sword often moves using a smaller circle than the broadsword and require more control. I think there's more of a focus on extending the qi into the weapon, and balancing it out with the sword charm hand, but this is from past research, not something my Sifu has told us. There are more single legged postures in the sword form, which really show whether or not you have balance. I'm still studying the sword, but from what I know now, the sword has more detail in the movements. Furthermore, while both forms require looseness, any lack of looseness really shows in the sword. I think there's a saying that "it takes 100 days to master the broadsword, but it takes 1000(0?) days to master the sword". I hope this helps.