Is a twist throttle safer then a push throttle?

Check for a vacuum leak on the intake. if there is no vacuum leak then you will need to rebuild the carburator. if your bike is injected change out the injecters

Throttle is the 2005 movie

Carbon build up. Clean the throttle body with a good carb cleaner.

Typically a device that controls the flow of air/fuel mixture to the intake of an engine.

Not very much. Only enough so the throttle shuts all of the way when released in most cases.