That's right, BladeMan. And then it just gets weirder. Like the sort of alloys that are tough as nails but almost stainless, and the ones that are quite hard but also tough, and then the design of the sword itself! The type, the purpose or technique, or the sort of swordly use it's skewed towards, such as speed and accuracy or raw cutting power. And then there are knives that are really complicated too! And then it just goes off the rails, with Japanese double-edged swords and stainless Navy katanas made during WWII (extremely rare). I'm tellin' ya, it's a madhouse of blades!