Theater of operations and Theater of war

Theater of operations noun - A region in which active military operations are in progress.

Theater of war and theater of operations are semantically related in location of military fights topic. In some cases you can use "Theater of war" instead a noun phrase "Theater of operations", when it comes to topics like place of warring.

Theater of war noun - The entire land, sea, and air area that may become or is directly involved in war operations.

Theater of operations and theater of war are semantically related in location of military fights topic. You can use "Theater of operations" instead a noun phrase "Theater of war", if it concerns topics such as place of warring.