No, it's not the same.
Actually, dark matter supposedly makes up nearly a quarter of the Universe versus dark energy making up nearly three quarters. Do the math and you come to the conclusion that normal matter makes up only a few percent of the composition of the Universe!
Dark energy is really just a "place holder" until we can unify our field theories. It's a way to explain the accelerating expansion of the Universe, but it really demonstrates how little we know about the physics of the Universe.