Gun turret and Weapons platform

Gun turret noun - A self-contained weapons platform housing guns and capable of rotation.

Weapons platform and gun turret are semantically related. In some cases you can use "Weapons platform" instead a noun phrase "Gun turret".

Weapons platform noun - Any military structure or vehicle bearing weapons.

Gun turret and weapons platform are semantically related. Sometimes you can replace phrase "Gun turret" with "Weapons platform", this phrases are similar.