noun
another world; a different world; a separate world
Refers to a world or realm that is completely different from the ordinary one, often implying a sense of wonder, escape, or unreality. Can be used literally or figuratively.
この庭園はまるで別世界のようだ。
This garden feels like another world.
彼の話はいつも別世界
His stories always sound like events from a different world.