The phrase "control gate" can be replaced by several synonyms depending on the context of its use. In a technical application, "flap gate" may be used instead, while "valve gate" may be a suitable replacement in an engineering context. A "turnstile" could also be considered a synonym when referring to a gate used for controlling pedestrian traffic. In the realm of security, the term "access control gate" is commonly used for gates that regulate entry or exit to a secure location. Finally, "checkpoint gate" can also be used as a synonym for a gate that is used to monitor the flow of traffic or people.