Mucous or Mucus?

Question: What is the difference between mucous and mucus?

Answer: Mucous is an adjective. Mucus is a noun.

Mucous is an adjective meaning producing or secreting mucus. Mucus is a noun which denotes a slimy substance secreted by the mucous membranes and glands.


The adjective mucous means covering or secreting mucus. It is usually seen modifying the nouns gland or membrane. For example:


The noun mucus denotes a slimy substance that is produced by the mucous membranes and glands. For example:

A Quick Test

Help Us To Improve English Grammar Lessons
Please tell us using this form.

See Also

What are nouns? What are adjectives? List of easily confused words