theatre vs theatre of operations

theatre and theatre of operations both are nouns.

Word	Noun	Adjective	Verb	Adverb
theatre	Yes	No	No	No
theatre of operations	Yes	No	No	No

As nouns, theatre and theatre of operations are synonyms defined as:

theatre and theatre of operations: a region in which active military operations are in progress

Other synonyms of theatre include field, field of operations, theater, theater of operations.

theatre (noun)	theatre of operations (noun)
a building where theatrical performances or motion-picture shows can be presented	a region in which active military operations are in progress
the art of writing and producing plays
a region in which active military operations are in progress