There are surprisingly numerous forms of bottle openers out there, nevertheless the two most widely used by far are club knives and corkscrews or crown cork removers. Corkscrews are used for opening bottles with corks, including bottles of wine or champagne. To make use of them, you just screw them into the cork, and then take the cork out and press down to the sides.
Crown cork removers and club knives, on the other hand, can not open corked bottles. For alternative ways to look at the situation, please consider checking out: VinousQ Announce Wing Corkscrew Wine & Beer Bottle Opener Release To The Market. They are basically just the finish section from the corkscrew, used to easily open capped bottles. There's nothing they can perform that a corkscrew cant, but they're easier to hold, much smaller and cheaper to make. These kinds of bottle opener tend to be stuck to tables or walls, making it simple to just grab a bottle and open it.