However, depending on the aspect of "hell" you're interested in, several Greek terms might apply:
* Hades (ᾍδης): This is probably the closest equivalent. Hades was the name of the god of the Underworld, and also the name of his realm, a shadowy place where all souls went after death, regardless of virtue or vice. It wasn't inherently a place of punishment like the Christian hell, though it wasn't pleasant either.
* Tartarus (Τάρταρος): This was a region within Hades reserved for the wicked, a deeper, more horrific pit of punishment. This is closer to the concept of a fiery hell of punishment.
* Erebus (Ἔρεβος): This refers to the primal darkness, a shadowy realm that predates even Hades. It's less a place of punishment and more a primordial void, sometimes associated with the Underworld.
Therefore, there's no perfect single-word translation. The appropriate Greek term depends on the specific nuance of "hell" you are trying to convey. If you're discussing punishment, Tartarus is the better choice. If you mean simply the realm of the dead, Hades is more accurate.