nasal passage

This term is primarily used in medical, anatomical, and biological contexts to describe the physical conduit of the respiratory system. It carries a neutral, clinical tone and is typically employed by healthcare professionals or in scientific literature to specify the exact pathway of airflow.

While "nose" is the common term for the external organ, "nasal passage" refers specifically to the internal corridors. It is rarely used in casual conversation unless describing a specific medical condition, such as a blockage or inflammation within those corridors.