Which to use
“mars” and “mer” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #426
- “mars” frequency rank
- #657
- “mer” frequency rank
- 1083
- confusion score
Side-by-Side Comparison
| Feature | mars | mer |
|---|---|---|
| Definition | Troisième mois de l’année du calendrier grégorien, qui compte 31 jours. | Vaste étendue d’eau salée qui baigne les diverses parties de la terre. |
Where the eye mixes mars and mer
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses mars with mer
A purely visual mix-up. mars (\maʁs\) and mer (\mɛʁ\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 1083, derived from the frequency rank of both members and their visual similarity.
mars is recorded at frequency rank #426, classified as anoun, pronounced \maʁs\. mer is at rank #657, tagged as anoun, pronounced \mɛʁ\.
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 1083, this pair ranks #438,652 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of mars vs mer
Shared letters: mr. Private to "mars": as. Private to "mer": e.
"mars" · 4 letters · shape CVCC · "mer" · 3 letters · shape CVC
Known mistypes of this pair
- mars ← amrs · marrs · marss · masr · mmars · mras
Frequently Asked Questions
Can "mars" and "mer" be used interchangeably?
Which is more common, "mars" or "mer"?
After this comparison
Eye-level mix-up between "mars" and "mer" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "mars" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "mer" - compare definitions side by side with the headword page. Word entry
- This pair ranks #438,652 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "mars" and "mer" also get mixed up with nearby pairs, the highest-scored neighbour is "mer vs MWh". 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 #438,652 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.