尿

1. Origins, structure, and basic meaning

• Structure: 尿（にょう） means urine discharged from the body.
• Basic usage: Use it in objective descriptions, such as collecting a test sample or observing traces left by an animal.

2. Common pitfalls and similar expressions

• Differences in register
  • 尿 is an objective term used in testing, observation, and similar contexts.
  • おしっこ is an informal, familiar expression.