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life and death; life or death
samsara (cycle of death and rebirth)
death
行方不明者の生死が三日経っても確認できない。
The life or death of the missing person cannot be confirmed even after three days.
大事故で生死をさまよったが奇跡的に回復した。
He hovered between life and death after the major accident but miraculously recovered.
戦場では生死を分ける判断が瞬時に求められる。
On the battlefield, split-second life-or-death decisions are required.