[Fred actually stays attentive while he's talking, because their form of magic sounds interesting enough. Bit more like specialized abilities than his world, but this is less os an explanation and more of a skim over the top, which leaves him to believe there's more to it. Best to let it alone, for now. He shrugs at the question.]

S'pose that depends. That's a fancy bit of charms work, what I did there, but there're loads of other things if you've got the skill to do 'em. Some folk are just lousy at it all, like Squibs or Neville.