Pistols are a type of handgun that fire single projectiles through a rifled bore each time the trigger is pulled.
Pistols typically have a removable magazine which holds the ammunition.
Revolvers are a type of handgun that fire single projectiles through a rifled bore each time the trigger is pulled.
Revolvers hold their ammunition in a revolving cylinder.
As with any other industry, the firearm industry has no shortage of misused terms. Here we're going to try to explain some of the commonly misused terms relative to handguns.