In The Neverending Story, the world is called Fantasia. It's a magical place full of all kinds of strange and wonderful creatures, like the luckdragons and the Rockbiter. Fantasia is a world that is slowly being consumed by 'The Nothing' throughout the story, which makes the journey of the main characters to save it even more important and exciting.
The name Fantasia in 'The Neverending Story' is quite significant. It sets the tone for the entire story. Since it's named Fantasia, we expect a world that defies normal rules and is filled with all kinds of amazing things. It also helps to create a sense of otherworldliness. When we hear the name, we know that it's not a world like our own, but a place where dreams and nightmares can come to life. It's a name that draws us into the story and makes us curious about what kind of strange and wonderful things we'll encounter there.
Well, it's hard to say for sure. There could be names like 'The Endless Adventure' or 'The Perpetual Storyline'. Different authors or works might give it various names to convey the idea of never-endingness.