Aren't there like a bajillion different variations of all the forms of martial arts? There are probably variations of the sword-wielding ones that use straight edges, and some that use curved edge. I know nothing though
I was looking at katanas online awhile ago though, and below each one that places were selling it said like "made from <something something alloy>, and cannot be used for cutting purposes. This may damage the blade. It can only be used for training purposes" So i was like 'Where's the fun in that? I want to go slicing branches off trees and stuff
'