One of my favorite things about many constructed languages is that they get rid of this distinction entirely. You don't have to worry about whether or not "Xify" is a so-called real word for any given value X, you only have to check if it X's type fits the pattern. This happens merely because it's a lot easier, when you're working from scratch anyways, to design the language that way than to have to come up with a big artificial list of -ify words.