It is used to describe the human and ghost world.

He was trying to resurrect what had suddenly become a ghost world.

This ghost world was enough to give anyone the creeps.

They don't feel real, they look like a ghost world.

When a human dies, after a period of uncertainty they may enter the ghost world.

Ghost World is a brilliant film but very different in it's handling of certain themes.

All three ask April how she came to the ghost world and she tells them what happened.

The Ghost World, the planet no one could ever find or, having found it, would never leave.

By the end of "Ghost World," we have some reason for hope.

But even this horrifying war news failed to catch his attention, and he passed by, walking through a ghost world.