mucusvsmurosTell them apart

Which to use

“mucus” and “muros” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#39,906
“mucus” frequency rank
#26,452
“muros” frequency rank
66358
confusion score

Side-by-Side Comparison

Feature mucus muros
Definition Mucosité, sécrétion visqueuse et translucide, produite par une muqueuse. Murs.

Where the eye mixes mucus and muros

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
mucus
5 ch
muros

Why the eye confuses mucus with muros

A purely visual mix-up. mucus (\my.kys\) and muros (\my.ʁos\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 66358, derived from the frequency rank of both members and their visual similarity.

mucus is recorded at frequency rank #39,906, classified as anoun, pronounced \my.kys\. muros is at rank #26,452, tagged as anoun, pronounced \my.ʁos\.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 66358, this pair ranks #68,190 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of mucus vs muros

Shared letters: msu. Private to "mucus": c. Private to "muros": or.

"mucus" · 5 letters · shape CVCVC  ·  "muros" · 5 letters · shape CVCVC

Known mistypes of this pair

  • mucusmcuus · mmucus · muccus · mucuss · muucs · umcus
  • murosmmuros · mruos · muors · muross · murros · murso · umros

Frequently Asked Questions

Can "mucus" and "muros" be used interchangeably?
No. They are said differently (\my.kys\ versus \my.ʁos\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "mucus" vs "muros" - which ranks higher?
"muros" is the more common of the two: it sits at frequency rank #26,452 in our French list, against #39,906 for "mucus". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "mucus" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "muros" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #68,190 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "mucus" and "muros" also get mixed up with nearby pairs, the highest-scored neighbour is "motus vs mucus". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #68,190 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list