Throttle is called commonly known and has been confirmed as a written term in recent years. The throttle valve body is a regular term for continuation. But because it is too specialized, it is often not easy for the public to understand. Structurally, the throttle body should include a throttle valve (valve), a support structure, a transmission structure, a control structure (throttle cable disc and a control sensor). Modern times are called throttle assemblies, or throttle units or throttle control units. including support structure, valve (cut-off valve), transmission rod, cable disc (electronic throttle here is the service motor), throttle control sensor, idle motor and so on. It can be seen that these two terms are said to be a thing, but in modern times called more use of throttle.
However, if you are a professional learner of cars, it is possible to focus more on the use of throttle valve address.