Types of Casien?

What is the difference between calcium casienate and miscellar casien. I was wondering because I wasnt able to make an order online for Metabolic Drive, so I got some “night time” protein powder from GNC. By the way, I cant believe how damn good Metabolic Drive tastes compared to the GNC stuff. I genuinley liked the taste of the Metabolic Drive, but can hardly force the GNC protein down.