Catarrh and Sputum

Catarrh noun - Inflammation of the nose and throat with increased production of mucus.

Sputum and catarrh are semantically related. In some cases you can use "Sputum" instead a noun "Catarrh".

Sputum noun - Expectorated matter; saliva mixed with discharges from the respiratory passages; in ancient and medieval physiology it was believed to cause sluggishness.

Catarrh and sputum are semantically related. You can use "Catarrh" instead a noun "Sputum".