What does it mean if a video card is discrete?

I am looking for Laptops and the HP Envy has a 1 GB Discrete AMD Video Card. Is it Good?|||Discrete cards are always a good thing: it means better gaming and media, and is the sign of a premium laptop. Yes, the HP envy is a very nice laptop, I've been wanting one myself for awhile :)|||Discrete video card is a card that is not part of the Motherboard its a add on.