female
smaller (of the two); weaker
「雌」 has another reading with different meanings.
female (animal, plant)
male
smaller waterfall (of the two)
雌の蜘蛛は雄より大きいことが多い。
Female spiders are often larger than males.
雌雄の判別は専門家でないと難しい。
Distinguishing male and female is difficult without an expert.
雌のカブトムシには立派な角がない。
Female beetles do not have horns.