köken: From Middle High German bar, from Old High German bar, from Proto-West Germanic *baʀ, from Proto-Germanic *bazaz (“bare, naked”), from Proto-Indo-European *bʰosós, from *bʰos- (“bare, barefoot”). Hence the meanings "without something" (as in bar jeder Einsicht "from every point of view") and "evident to the naked eye" (attested in Middle High German bar in reference to money).
köken: Etymology tree Proto-Indo-European *kap- Proto-Indo-European *-yéti Proto-Indo-European *kapyéti Proto-Italic *kapjō Proto-Italic *kapsos Latin capsa Old Catalan caixabor. Old Galician-Portuguese caixa Portuguese caixa From Old Galician-Portuguese caixa, borrowed from Old Catalan caixa, from Latin capsa. Compare Sicilian caxa, Spanish caja.
aile: a toque de caixa, caixa chata, caixa clara, caixa d'água, caixa de areia, caixa de câmbio, caixa de coleta, caixa de correio, caixa de costura, caixa de entrada
köken: Etymology tree Proto-Indo-European *bʰel-der. Proto-Indo-European *bʰlewH-der. Proto-Indo-European *bʰluH-yé-ti? Latin fluō Proto-Indo-European *dʰeh₁-der. Proto-Italic *-iðos Latin -idus Latin fluidus From fluō + -idus.