Gehenna is a synonym of jahannam.
As proper nouns the difference between jahannam and gehenna
is that jahannam is islamic concept of hell, where unfaithful Muslims not true to their religion will be punished, but will eventually be forgiven while Gehenna is in Judaism and the New Testament the place where some or all spirits are believed to go after death.
As a noun gehenna is
alternative case form of Gehenna.
jahannam
English
Alternative forms
* Jehannum
Proper noun
(
en proper noun)
(Islam) Islamic concept of hell, where unfaithful Muslims not true to their religion will be punished, but will eventually be forgiven.
Related terms
* Gei Hinnom
* Zaqqum
* Jannah