Now that I'm moved and can start serious work on this new sandbox campaign, I really need to pin down a name. The new poll has a shorter voting period.
Within the context of the campaign itself, I could really see myself using both names. The vaguely Gaelic folks who are native speakers of Common/Westron call the world Cinder. The Adelic-speaking invaders/occupiers/ruling class call the area Andrivøld, because even a generation or two later they still consider the place a whole different world from back home. Tolkien can do those linguistic bits with more aplomb, but seeing as how my whole setting will be more hamfisted than Middle Earth, I think I can get away with it. Whether the official name for the whole setting is Cinder or Andrivøld then takes on ethnic and social dimensions.