Field of battle and War zone

Field of battle noun - A region where a battle is being (or has been) fought.

War zone and field of battle are semantically related. In some cases you can use "War zone" instead a noun phrase "Field of battle".

War zone noun - A combat zone where military operations are coordinated (especially a designated area in international waters where the rights of neutrals are not respected by nations at war).

Field of battle and war zone are semantically related. You can use "Field of battle" instead a noun phrase "War zone".