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.