"Der Mann gibt seiner Frau kein Kontra."
You totally misunderstood what I said. I didn't say "to talk back to" means the same as "reply". I said "to talk back to" inherently involves a form of reply, and that's why I believe Christian's distinction is false and doesn't make sense. Any native English speaker would understand what I mean...
I still don't get it. If they don't mean the same, it does make sense to keep the meanings separate, doesn't it? Nobody claimed that 'to talk back' wouldn't involve a form of reply.
"Minus" is mostly a mathematical term ("Ten minus six equals four"). In other contexts, it means "less than."