暗がり (translations)→ angle dark dimness gloom night semidark shades shadow
暗闇 (translations)→ black blackness
闇 (translations)→ hole informal
地獄 (translations)→ abyss blazes doom hell inferno netherworld
夕闇 (translations)→ dusk evening twilight
夜 (translations)→ day morning rest of the evening