The four element which is in wow for an example, is nonsense.
You could argue that water and wind are "elements" in a sense that they are corrosion forces, and heat can also be considered an element. But "earth", what the fuck does that mean?
Also, world is not made out of "four elements". Universe is made out of hundreds of basic elements like hydrogen, helium, carbon etc and even those are made out of even smaller particles.