What is the difference between real world and virtual world ?

What is the difference between real world and virtual world ?
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The real world is about the events that actually happen. The virtual world, on the other hand, is a science-based imagination that is not real in the real sense but arousing the consciousness of reality. The real world is based on nature and all man-made phenomena. Virtual reality is a computer controlled environment where users can be immersed in that environment , enjoy the visual effects created by imitating reality , as well as experience real-life auditory and physical and mental emotions , sensations of excitement, etc. This virtual world is based on computer technology and simulation theory.
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