Moonie, as you say dark matter and dark energy are unproven. They've been thought up by scientists to try to explain things but it doesn't mean that they are right. Dark matter is so called because it deosn't interact with what is called baryonic matter (= ordinary matter) and scientific instruments haven't identified it so to us it's invisible. The Hadron Collider is trying to locate such dark material.
Dark energy is not the same thing as dark matter. I assume it's so called because it hasn't been found yet.