12 Old HSK word(s): ☊夜 ** A ☊夜里 ** B ☊夜晚 ** B ☊半夜 ** B ☊深夜 ** C ☊日夜 ** C ☊夜间 ** C ☊开夜车 ** C ☊黑夜 ** C ☊昼夜 ** D ☊夜班 ** D ☊连夜 ** D
熬夜* * 白夜* * 查夜* * 彻夜* * 大年夜* * 过夜* * 后半夜* * 今夜* * 年夜* * 前夜* * 起夜* * 日日夜夜* * 日以继夜* * 入夜* * 深更半夜* * 守夜* * 宿夜* * 午夜* * 巡夜* * 整夜* * 子夜* *

Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.

子 offspring, child / fruit, seed of / 1st terrestrial branch
夜 night, dark / in night / by night

Hsk Characters: 夜 *
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual
夜 591C + 夜 + + night, dark / in night / by night 夕 夜 Evening 夜 (NACHT) ye4 +

Korean:

夜 + 夜 밤 야 (the night)
2 NHSK word(s): 夜* 5 ye4night 昼夜* 6 zhou4 ye4day and night/ period of 24 hours/ continuously; without stop
KOREAN6000 word(s):
2 KOREAN 2500 New HSK words):
熬夜 + áoyè 밤새다. 철야하다. bamsaeda. cheol-yahada.
夜 + yè 밤. bam.
2 KOREAN Sentence(s):
黑夜是黑暗的 + 밤은 어두워요. bameun eoduwoyo.
他们那时可以长时间熬夜。 + 그들은 늦게까지 안 자도 됐어요. keudeu-reun neujkekkaji an jado dwaeh-sseoyo.