I'd say they both do, but after you said what you said I had a sudden realization that we might be talking about two different things.
I don't think NK is going to give up its nukes. I do think NK is going to give up its nuclear ambitions (i.e. its R&D). Lots of people have been calling the latter denuclearization, though I see now how that term is very ambiguous and a better one could be used.