Mysidia: When and How will it show up?

[Kazrah]

Well the planet of Azeroth has the contient of Azeroth and on it the kingdom of Azeroth. So yes, humans are lazy when naming places.

Actually WoW only uses that name for the planet. No continent or kingdom shares the name.

Back to FFXIV though, given the Sharlayan tradition of restricting nearly all knowledge from there, it may be possible that Sharlayan is identified as a city, an island and a nation of islands because of how little everyone outside the place knows of it. Actually, given how hellbent they can be about hiding their info away, they might probably hide enough of it from their own citizens.