What is another word for mucous secretion?
Pronunciation: [mjˈuːkəs sɪkɹˈiːʃən] (IPA) 
Mucous secretion refers to the slimy, viscous substance produced by the cells lining the mucous membranes of the body. This secretion plays an important role in protecting the tissues and organs from damage or infection by trapping harmful particles and microorganisms. Synonyms for mucous secretion include phlegm, sputum, mucus, and catarrh. Phlegm refers specifically to the thick mucous secreted in the respiratory tract, while sputum is the mixture of saliva, mucous, and sometimes blood that is expelled when coughing. Catarrh is a term used to describe excessive mucous secretion, particularly in the nose and throat, resulting from inflammation or infection.
