kólera (Icelandic) comes from Latin cholera, from Ancient Greek χολέρα, from Ancient Greek χολή, from Proto-Hellenic kʰolā́, from Proto-Indo-European ǵʰolh₃-éh₂, from Proto-Indo-European ǵʰelh₃- — to flourish; green, yellow.
kólera (Icelandic): cholera