Nasal, in medical terms, usually refers to the nose, so for example, nasal congestion would be a lot of mucus in the nose. Think of it as how cardiac means related to the heart area.
(liquid) nasal mucus; nasal discharge; pituita; snot;
To do with the nose.
nose
Clear nasal mucus or, "snot", is usually associated with allergies. If your nasal mucus is green or yellow you may have an infection and should see a doctor.
This question needs to be more specific. I assume that you mean a nasal spray with a medication, and there are different types of drugs that are made and administered as nasal sprays.
Rhinitis is inflammation in the nasal passages.
its when you go blind and gradually stop breathing
It's a good normal finding.
Nasal Cannula
Brown nasal discharge can be a sign that there is bleeding in the nose or sinuses. Which are hollow cavities in the nose. A brown nasal discharge is not normal.
The Nasal Septum
No Lymph Nodes are in the neck and nasal area.