Mucus-Mucous | Commonly Confused Words
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Master confusing words with ease

Mucus vs. Mucous

Mucus

/ˈmjuːkəs/
A thick, slippery substance produced by the body's glands to protect and moisten surfaces

Examples:

The doctor explained how mucus protects our lungs.Seasonal allergies often lead to excess mucus production.Mucus traps dust and microbes entering the nasal cavity.

Synonyms:

Antonyms:

Mucous

A slippery substance produced by membranes in the body, often found in the nose and throat.

Examples:

The snail leaves a mucous trail across the pavement.Mucous membranes line various cavities within the body.During allergies, mucous production can significantly increase.

Synonyms:

Antonyms:

Ways to tell them apart:

etymology
  • "Mucus" is a noun, so it refers to the substance itself, like water, air, or food.
  • "Mucous" is an adjective, and adjectives describe nouns, e.g., mucous membrane.'
  • Remember: mucus has an s at the end like mass, focusing on the substance.
  • Mucous has an o, which you can associate with coat to remember it's describing things that are covered or lined.
  • Visualize a mucous membrane secreting mucus to help remember which is which.
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