Drywall screws have a curved, bugle-shaped top, allowing them to self-pilot and install rapidly without punching through the paper cover. These screws are set slightly into the drywall.
Drywall screws cost more than nails, but they provide better holding power, minimize popping and help prevent damage to the panel.
They do much less damage to wood, they are easier to remove and can even be reused. Using drywall screws can go a lot faster, if you have the right tool. You want to use a special electric drywall screw gun that lets you adjust it to sink the screws a little below the surface.
TIP: Trying to pry out a bent nail may tear up more drywall than it's worth. Just nail it in so it's not sticking out from the surface and then mud over it later.
When drywall is hung on wood framing, screws having an acute point and widely spaced threads are used.