It's not entirely absurd to think that somewhere in the past of mankind someone, for the first time, did in his mind the equivalent of putting an adjective to a noun, and saw, not only a relationship, but special relationship between two things of different kinds....In sum, all the seemingly complicated kinds of modification in English are just ways of thinking and seeing how things go with each other or reflect each other. Modifiers in our language are not to understanding relationships; they are to understand relationships. A mistake in this matter either comes from or causes a clouded mind. Usually it's both.