Gaelicatnip and Mi'qote

[Lucke]

I'm more nitpicky about the term "races". It SHOULD be the five* SPECIES. *6 now, and I wouldn't necessarily call Garleans as a different race, more like sub-race to regular Hyurs. Races can create offspring with each other, species can't. IE in real life, a Human cannot create offspring with a....cat, but a Caucasian human can create offspring with an African American for example. AFAIK, we haven't seen any legit mixed races except Elezen + Hyur. There's the Roegadad in the Saucer with a Hyur kid, but we don't know for sure if he's a biological child of Roegadad or simply been orphaned in the Calamity then adopted out to Roegadad. The Elezen and Hyur seem to be MUCH more similar and may even share an ancestor race since they can create offspring but still, I haven't seen any Laladyns or Miqo'hyurs. Thal's Balls this just gets confusing. "The Five Races" may just roll off the tongue better than "The Five Species".

[Iscah]

I'm more nitpicky about the term "races". It SHOULD be the five* SPECIES.

It depends on the context, and "race" is perfectly valid as a synonym for species here. See: "human race", and generally in fantasy fiction other human-equivalent peoples (elves, orcs, etc.) will also be referred to as races. "Species" sounds more scientific and sort of.... distant?

Also, cross-species breeding is rare but not impossible. Related species with similar body shapes can still potentially have offspring. (Wikipedia: Hybrid)

Of course a human can't create offspring with a cat, but different species of cats can breed with each other.

Whether the races of Eorzea should be classified as a single species or several, it's still conceivable that the different races can have children together. We might just not see many because it's culturally avoided rather than physically impossible.