What's the difference b/w a laptop bag and case?

I just bought a 14.1'' Laptop and I would like to buy a shoulder padded bag for it but I also noticed the notebook case...whats the difference? just that the bag has departments and a handle while the case doesn't?

Is it possible to get the laptop...

case then put the case inside the bag?

:/ [[first time laptop owner]]

Well, each manufacturer uses names liberally when it comes to things like this. A bag refers to something that is usually soft and is made of cloth, fabric, and or leather of some kind. A case is usually a more rigid storage device that is either made of plastic, metal, leather, and secures the stored device in case of a fall or accident better then a bag. SO... to answer your 2nd question... yes your can get a laptop neoprene/leather and/or fabric sleeve/bag to put on your laptop and then place your sleeved/bagged laptop in your new case/briefcase/carry bag/backpack/carrying device. lol, it really depends on exactly what is really what...but you already have it figured out... putting a neoprene shock adsorbing sleeve over the laptop and then placing it in a carry case is NOT over kill... it's protecting your investment..

Just one catch... do not store your laptop while it's in standby or running for any period longer then a few minutes (unless your outside in -15 temp) or your laptop will burn up like my girlfriend's did... she left it on, closed the lid, placed it in JUST a case, then left it for a few hours in the trunk of her car... later that eveing she found it super heated and wouldn't turn on after that...

SO if you add a protective sleeve/bag to that...

A laptop case just covers your laptop while a laptop bag allows you to cover your laptop, carry it with ease and place needing things into its compartments.