Translation

粘液 / 鼻水 / 痰に近い分泌物

Meaning

Mucus is the thick slippery fluid produced inside the nose, throat, lungs, stomach, and other body parts to protect and moisten them. It is the noun for the substance. The learner trap is using mucous, the adjective, when you need the noun.

Examples

• 風邪のせいで鼻の粘液が増えました。
  The cold increased the mucus in my nose.
• 医師は粘液の色について尋ねました。
  The doctor asked about the color of the mucus.