...nameless hideous monsters are freaking terrifying. You always fear what you don't know, what you don't understand, and the first step to having understanding of something is to know what to call it. It's a habit of mine to give names to anything I wind up interacting with if it doesn't have one readily available. Names have power--magically, sure, but far more important, they have psychological power. Something horrible with a name holds less power over you, less terror, than something horrible without one.