男子

1. Origins, structure, and basic meaning

• Structure: 男子 (だんし) is a noun for males, used in facility labels and for groups of male students.
• Basic usage: 男子の更衣室 classifies who uses the changing room, while クラスの男子が机を運ぶ makes the boys in a class the subject moving desks.

2. Common pitfalls and similar expressions

• Males in general and male students
  • 男子 does not inherently mean a student. クラスの男子 refers to male students because of the class context, whereas 男子の更衣室 labels a facility for males.