Many words work great only so long as discussion occurs within the box they are suited for.
This is true. The box I'm referring to, is at its base level of comprehension, what we all call "Reality". Objectively, it includes all things realized and unrealized. Anything outside the box, is by definition, unreality, unreal, fiction.
We should not try to leverage their common meanings to make statements about domains where their applicability may well break down.
What do you mean "leverage" their common meanings? What do you mean may well breakdown? You must be confusing objective and subjective views.
If I assume that you mean to say that what the term "reality" means objectively, does not confidently constitute what reality is; then I don't see how, since the term "reality" in its objective view includes all knowns and unknowns.
We're talking about a sentiment/thought that's objectively comprehensive only in its positive/negative aspects, which already concludes we don't comprehend everything that's real from our subjective view. We have to stay inside the box objectively, otherwise we're not referring to an objective reality, but a subjective reality. Consider that if we were to believe that reality could break down, then what would it breakdown into, fiction? Objectively, reality can't breakdown, since it would only breakdown into unreality, which creates a contradiction in reasoning. I mean, was it ever really real in the first place? Does that mean unreality is becoming more real than reality as reality breaks down? The only way reality can breakdown into unreality is if it's a subjective view of reality that was never real in the first place. Why? Because all of reality is some form of energy and energy is real, not fiction.
An epistemologist sat down at a bar next to a professor of linguistics. The epistemologist turns and strikes up a conversation with a loaded question:
Epistemologist: "Did you know we don't actually know anything?"
Professor of linguistics: "So then how would we know that?"
Epistemologist: "No, I mean we can't be 100% sure what reality is, not what reality means".
Professor of linguistics: Oh really? Are you for real?
Epistomologist: Ha ha, funny. Seriously, I'm not sure.
Professor of linguistics: Now that's the first thing you've said that is halfway coherent.