What's the difference between these two MacBook CD's?

-Whats the difference between the "Mac OS X Installation DVD" (**NOT** the Applications Install DVD) that comes with your MacBook, and the difference between the Mac OS X 10.6 Snow Leopard cd? Can you restore your MacBook to factory settings with both?

Mac OS X 10.6 Snow Leopard: http://store.apple.com/us/product/MC573Z/A?fnode=MTY1NDAzOA&mco=MTc1ODgwMjE

and the grey DVD included with your MacBook?