Is called storyteller to the individual who narrates: that is, who tells something. Omniscient , meanwhile, is the one with omniscience (knows all things).
The idea of omniscient narrator It is used in the field of language and the literature to allude to the voice that, when telling a story, is aware of all the events . This is a narrator in third person , which is not the protagonist of the facts.
The omniscient narrator not only know what happens at all times and places : also has knowledge about thoughts and the feelings of the characters . It can be said that not only "Watch" from above the reality of the story, but also gets into the "inside" of each of the protagonists.
Another characteristic of the omniscient narrator is that he knows what has already happened, what is happening and what will happen in the plot. Therefore, know the past , he I presented and the future of the related.
Let's see a example : “Night was falling when Juanito López decided to go out for some air. He had been drinking in his bedroom and wanted the fresh air to clear up the ideas that appeared in his mind in a disorderly and confusing way. However, the young man did not know that he was going to meet his worst enemy in the street ”.
As you can see, this paragraph is presented by a omniscient narrator that has access to "Ideas" circulating in the "mind" of the character, even if he does not make them public within the framework of the history . He also knows what will happen to the protagonist before the materialization of this situation.