It all depends on the length of the barrel, the caliber, and how much blackpowder you pour down the barrel.
A pistol, which is a single shot muzzleloading handgun was around .50 cal and loading 40 grains of blackpowder and a patched round ball shoots at around 750 fps. A revolver, such as the .44 cal Colts and the .44 cal 1858 Remingtons used during the Civil War loaded around 35 grains of blackpowder with a slightly oversized ball, around .451 or .454, can spit those balls at around 800+ fps. The 1847 Colt Walker was a .44 cal open top revolver, but on a much bigger frame. The gun loaded weighed a good five pounds, and it had a larger and long cylinder which held more powder, and could spit roundballs at over 1200 fps. The black powder Colt Walker is regarded as the most powerful commercially manufactured repeating handgun from 1847 until the introduction of the .357 Magnum in 1935, and has a muzzle energy nearly exactly the same as a 4-inch-barreled handgun firing a .357 Magnum.
Better is a relative term- you need to specify better for what. Semi auto pistols tend to be flatter than revolvers, and MAY hold more cartridges. Revolvers MAY fire a more powerful cartridge than a semi auto (not always). A revolver is simpler to operate, and functioning is more reliable.
Pistols are contained in a holster.
No specific term of reference. There are semi auto pistols that fire rifle cartridges, and are much more powerful than standard pistols.
single shot, revolver, semi-automatic
Revolvers are pistols. Whether a revolver is better than a semi-automatic has been debated for almost 100 years. It depends on what you like, intended use, etc..
No.
It's the round which makes the difference, not the pistol. A .45 automatic pistol is going to be more powerful than a .38 revolver, for example. There are revolvers chambered in cartridges such as the .454 Casull and .500 S&W Magnum, which aren't available in any automatic pistols, but it's still ultimately the round which matters, and not whether it's an automatic or revolver.
Can't be answered as asked. A revolver is a pistol. Adv/DisAdv in what situation?
No real way to answer, since there ar a number of pistols that fire rifle caliber ammunition. There has even been a bolt action pistol mde in caliber .50 BMG, and a revolver in .600 Nitro Express (an elephant rifle cartridge). In the traditional revolver type, among the MORE powerful may be the .500 S&W, the .460, and some of the Linebaugh and Cassul cartridges. There is a point reached where a cartridge may be possible, but have no practical use. If a handgun has so much recoil that it cannot be fired, or weighs more than a rifle- what's the point?
Revolver and Semi-automatic.
In most cases, the shotgun.
Revolvers have a CYLINDER that spins. And yes, single or double shot pistols, and automatic pistols do not have a cylinder- so there is nothing to spin, rotate or revolve.There were a couple of two or more shot pistols that were developed before the development of the revolver that twisted or spun barrels to fire multiple shots. More often than not, firing a single shot from most of these would fire all barrels, and more often than not would cause the weapon to explode, injuring or killing the shooter.