Like names in Rowling’s work, spells are very specific and informative. Spells are in fact nothing more than the expression of a wish in a formulaic way and require nothing else apart from concentration and a flick of the wizard’s wand. There is no unintelligible ‘hocus pocus’; Reducio reduces the size of an object, Lumos produces light, Reparo repairs, and so on. The power of language is absolute since all one has to do to make something happen is to correctly pronounce the word.