spirit world

[Haroldvof]

any imaginary place where spiritual beings (demons or fairies or angels or the like) abide

[ArthuraCig]

In Latter Day Saints theology, the term spirit world refers to the realm where the spirits of the dead await the resurrection. In LDS thought, this spirit world is divided into at least two conditions: paradise and spirit prison:
Paradise includes the spirits of the just, who had been faithful in the testimony of Jesus while they lived in mortality.
Spirit prison is the condition of the spirits of the wicked ... the ungodly and the unrepentant who had defiled themselves while in the flesh ... the rebellious who rejected the testimonies and the warnings of the ancient prophets.... The latter will continue to receive gospel teaching and be given the opportunity to repent, though their disposition toward repentance will only change as they recognize and accept gospel truths and believe in Jesus Christ.

[Utpal Shuvro]

The spirit world, in various religious, spiritual, and mythological traditions, is an abstract realm or dimension in which spirits, gods, demigods, supernatural beings, deceased souls, and other non-physical entities exist. It is believed to be a transcendent place where beings can interact, communicate or influence the physical world in certain ways, according to the beliefs associated with it. The concept and understanding of spirit world varies widely among different cultures, religions and spiritual practices.