Fictitious place and Infernal region

Fictitious place noun - A place that exists only in imagination; a place said to exist in fictional or religious writings.

Infernal region and fictitious place are semantically related. In some cases you can replace phrase "Infernal region" with "Fictitious place", this phrases are similar.

Infernal region noun - (Christianity) the abode of Satan and the forces of evil; where sinners suffer eternal punishment.

Fictitious place and infernal region are semantically related. Sometimes you can use "Fictitious place" instead a noun phrase "Infernal region".