Synonyms for Theatre (same or very similar meaning)
WordNet sense 1 (a region in which active military operations are in progress):
field, theater, field of operations, theater of operations, theatre of operations
WordNet sense 2 (the art of writing and producing plays):
dramatics, dramaturgy, dramatic art
WordNet sense 3 (a building where theatrical performances or motion-picture shows can be presented):
house, house
From the ODE community, based on WordNet
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