Genders

Unlike Terrans, Symbians recognize multiple genders that have nothing to do with physical sex:
Mae: Tending to masculine or "butch" characteristics
Fae: Tending to feminine or "femme" characteristics
Shae: Tending to both
Nae: Tending to neither
There is currently a debate over whether "dae" is a gender as well, with proponents arguing that it's a category of person and a way of thinking.