[lit. box]
Biblical: Noah's ark: sgam gyi nang du zhugs shig Go into the ark (Gen. 7:1), no a yis sgam chen po bzo ba'i tshe/ while Noah was building the ark (1 Pet. 3:20 SV).
Secular: gtam gyi nor bu snying gi sgam du chugs/ keep this precious advice in the inner recesses [lit. heart box] of your heart (KPU 32).
[lit. boat]
Biblical: Noah's ark: no a gru'i nang zhugs pa'i nyin mo/ the day Noah entered the ark (Mt. 24:38).
Buddhist: a container for the soul: dal 'byor gru chen rnyed dka' thob dus 'di/ this human vessel difficult to find (GSL 6).
Cognates: 1) gru zing / boat: gru zing chen po gcig gzos dgos/ had to build a large boat (DPD), 2) gnam gru/ [sky + boat] airplane.