雌雄

1. Origins, structure, and basic meaning

• Structure: 雌雄 is read as しゆう and can mean “male and female” or “victory and defeat”, depending on context.
• Basic usage: The examples show identifying male and female birds and deciding victory in a final.

2. Common pitfalls and similar expressions

• Distinguishing senses and uses
  • It literally means male and female animals; in the idiom 雌雄を決する, it means settling who wins and loses.