köken: From Middle High German nëbel, from Old High German nëbul, from Proto-Germanic *nebulaz, from Proto-Indo-European *nébʰos (whence also Proto-Balto-Slavic *nébas, Proto-Indo-Iranian *nábʰas, Ancient Greek νεφέλη (nephélē, “cloud, mist”), Latin nebula (“mist, fog”)). More at English nuel.
aile: Abkühlungsnebel, bei Nacht und Nebel, Bergnebel, Berührungsnebel, Bodennebel, Dampfnebel, Eisnebel, Flussnebel, Frühnebel, Hochnebel
köken: From Proto-Italic *neβelā, from Proto-Indo-European *nébʰos (“cloud”). Cognate with Ancient Greek νέφος (néphos), νεφέλη (nephélē), Old High German nebul, Sanskrit नभस् (nábhas), Old Church Slavonic небо (nebo). Note that despite similar pronunciation and semantics, not related to nūbēs (“cloud”).