prison, jail
獄 centers on confinement and legal judgment: a prison or jail where people are held after being accused or convicted.
獄 combines 犭 (a dog-like animal) with 言 (words/speech), suggesting a guarded place where disputes are judged. The exact historical development is uncertain, but the modern form visually suggests a prison guarded by fierce animals and legal proceedings.
Two fierce dogs 犭 stand guard on either side while words 言 are exchanged inside: a prison where arguments are settled under watch.
For ゴク, imagine a prisoner locked in a cell with a heavy iron lock that makes a deep 'goku' sound when it closes: goku -> ゴク.
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hell realm; Naraka
prison
escaping from prison; breaking out of prison; jailbreak
imprisonment; incarceration
jail; gaol; prison
prison; jail; gaol
during imprisonment; while in jail
purgatory
bribery scandal; graft case
prison gate
antlion (larva); doodlebug
death in jail; death in prison
low-ranking prison guard
being readily aware of rumors and gossip; being quick to learn secrets; having sharp ears
roundup; wholesale arrest
picture of Hell
being imprisoned; being sent to prison
loan shark hell; distress caused by high-interest loans and aggressive collection methods
being sent to prison
traffic hell; traffic congestion