γέεννα
ge-hinnom
γέεννα valley of (the son of) Hinnom; ge-henna (or Ge-Hinnom), a valley of Jerusalem, used (figuratively) as a name for the place (or state) of everlasting punishment
Derivation: of Hebrew origin (H1516 and H2011);
KJV Usage: hell. H1516 H2011
Thayer:
1) Hell is the place of the future punishment call "Gehenna" or "Gehenna of fire". This was originally the valley of Hinnom, south of Jerusalem, where the filth and dead animals of the city were cast out and burned; a fit symbol of the wicked and their future destruction.

γέεννα
geenna
gheh'-en-nah
Of Hebrew origin ([H1516] and [H2011]); valley of (the son of) Hinnom; gehenna (or Ge-Hinnom), a valley of Jerusalem, used (figuratively) as a name for the place (or state) of everlasting punishment
KJV Usage: hell.