what's the difference between oeuvre and oeuvrage

Bonjour Rih, Une œuvre is the general term for a work, task, or deed. Un ouvrage is fairly synonymous, but has a slight nuance in that it refers more to the act of working than to the work itself. Un œuvrage is either a combination of the above (and therefore another synonym) or a typo.

merci beaucoup :)