Comment by dragonwriter

Correct, nationality and citizenship are not precisely coextensive, but they are close enough in practice and citizenship sufficiently more commonly encountered of a concept that I wasn't going to try to get overly specific about nationality in a conversation where refugee status and statelessness were being confused. Perhaps a hypercorrection to my tendency to go into excessive detail... In any case, yes, there are some countries [0], where some nationals are not full citizens, and statelessness is precisely the absence of nationality, not citizenship.

[0] the United States among them. https://travel.state.gov/content/travel/en/legal/travel-lega...