Courage can be translated in Greek as "κουράγιο", a word derived from Italian coraggio and the Latin cor, which is derived from the Greek word for "heart" (καρδία, καρδιά).
Even in a forum devoted to ancient Greek, this observation on the derivation of the modern Greek noun κουράγιο is an important comment. Italian coraggio
does indeed go back to Latin cor
, and the Latin word is cognate (related) with the Greek word for "heart" (and, indeed, with the English word heart
) through their common ancestor in Proto-Indoeuropean. Among many other etymological authorities, see Pierre Chantrain, Dictionnaire étymologique de la langue grecque