sputum vs. mucus

sputum

[ spyoo-tuhm ]show ipa

noun,

1. matter, as saliva mixed with mucus or pus, expectorated from the lungs and respiratory passages.

mucus

[ myoo-kuhs ]show ipa

noun

1. a viscous, slimy mixture of mucins, water, electrolytes, epithelial cells, and leukocytes that is secreted by glands lining the nasal, esophageal, and other body cavities and serves primarily to protect and lubricate surfaces.