köken: From Middle High German decke, from Old High German theckī, decchī, derived from thecken (modern decken), from Proto-West Germanic *þakkjan, from Proto-Germanic *þakjaną. Cognate with English deck. Compare analogous Dutch dek. Also related with German Dach, Dutch dak, English thatch.
ceiling · the highest place inside an object · the top price of something
zıt: 床
köken: */tenzjau/ → /tenʑjɔː/ → /tend͡ʑoː/ From Old Japanese, in turn from Middle Chinese 天井 (MC then tsjengX). First cited in Old Japanese to a work from 759. The word is literally spelled 天 (“heaven, sky”) + 井 (“well, wellhead”), in reference to the way that ceiling beams were arranged in the shape of a wellhead. See also Ancient Chinese wooden architecture § Roof and ceiling on Wikipedia.Wikipedia
köken: Inherited from Sanskrit *छत्ति (*chatti, “covering, roof”), from the root छद् (chad, “to cover”) + -ति (-ti). Displaced Old Hindi छात (chāta), from the same Sanskrit source.
From Vulgar Latin *suffīctus, perfect passive participle of Latin suffīgō (“to fasten or fix onto”); compare Classical Latin suffīxus. Cognate with Piedmontese sofit.