Which of the following words denote males, and which denote females?
boy, man, uncle, hero, emperor,
girl, woman, aunt, heroine, empress.
Sex is one of the two divisions of animals, male and female.
The distinction of sex is called =gender=.
A noun that denotes a male is of the masculine gender; as, father.
A noun that denotes a female is of the feminine gender; as, mother.
Some nouns are either masculine or feminine gender; as, friend,
neighbor.
Nouns that denote things neither male nor female, have no gender; as,
book, tree.