Automatic - Shoots with just pull of the trigger
Machine gun - (See Automatic)
Assault Weapon - Requires two hands and has a longer barrel than a gun. Also see Automatic and Machine gun)
Cop Killers - Special bullets that go through any body armor and kills Police Officers.
Hollow points - (See Cop Killers)
Handgun - Gun that can be shot with one hand and even with no hands. Can be used with Automatic to become a class of Assault Weapon.
Pistol - A smaller handgun. Usually cheaper and less lethal.
Allegedly - When a gun is fired in self defense.
Journalist guide to gun nomenclature continued:
Rifle - A very accurate long barrelled gun used by military snipers to kill humans.