The zodiac and the elements are divided into feminine (Earth and Water) and masculine (Fire and Air) signs; this distinction is not related to gender so much as the dichotomy of yin and yang ...
So interesting, in fact, that they're spread out over all 12 zodiacsigns, with some much more prevalent than others. For instance, Paul Rudd is a lone Aries and Adam Levine is the single Pisces ...