The older I become, the more I realize how little I know...
So, all those years in Catholic school, when everyone was referring to the sisters as both “sisters” and “nuns,” we were confusing two terms with one another. I’m just curious: If the title “Sister” (as in Sister Mary Margaret) is used for sisters, is there a different title used for nuns?
Right. Nuns wouldn't be teaching school. Those are sisters. And the sisters that taught me aeons ago gently corrected us when we used the wrong term.
, is there a different title used for nuns?
No ... nuns are addressed as "Sister".