A weapon mount is an assembly or mechanism used to hold a weapon (typically a gun) onto a platform in order for it to function at maximum capacity. Weapon mounts can be broken down into two categories: static mounts and non-static mounts.
A static mount is a non-portable weapon support component either mounted directly to the ground, on a fortification, or as part of a vehicle.
A gun turret protects the crew or mechanism of a weapon and at the same time lets the weapon be aimed and fired in many directions.
A turret is a rotating weapon platform, strictly one that crosses the armour of whatever it is mounted on with a structure called a barbette (on ships) or basket (on tanks) and has a protective structure on top (gunhouse). If it has no gunhouse it is a barbette, if it has no barbette (ie, it is mounted to the outside of the vehicle's armour) it is an installation.
Turrets are typically used to mount machine guns, autocannons or