It's exactly that imprecision that means the person making the statement gets to tell you what it means for them, and they're not unreasonable for being very explicit in telling you that you will not convince them that their definition is more appropriate.
Furthermore,
on a purely mechanical level, what you're doing here is trying to escalate scope specifically so you don't have to give the point. Just give the point.
Furthermore,
on a purely mechanical level, what you're doing here is trying to escalate scope specifically so you don't have to give the point. Just give the point.