Which to use
“écu” and “écume” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #28,025
- “écu” frequency rank
- #26,228
- “écume” frequency rank
- 54253
- confusion score
Side-by-Side Comparison
| Feature | écu | écume |
|---|---|---|
| Definition | Bouclier que portaient autrefois les chevaliers. | Sorte de mousse blanchâtre qui se forme à la surface des liquides agités, chauffés, ou en fermentation. |
Where the eye mixes écu and écume
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. écu runs 3 letters (VCV) against écume's 5 (VCVCV) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between écu and écume
A purely visual mix-up. écu (\e.ky\) and écume (\e.kym\) 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 2 extra letter(s) - “écu” sits inside “écume”. Our composite confusion score for this pair is 54253, derived from the frequency rank of both members and their visual similarity.
écu is recorded at frequency rank #28,025, classified as anoun, pronounced \e.ky\. écume is at rank #26,228, tagged as anoun, pronounced \e.kym\.
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 54253, this pair ranks #135,257 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of écu vs écume
Shared letters: cué. Private to "écu": -. Private to "écume": em.
"écu" · 3 letters · shape VCV · "écume" · 5 letters · shape VCVCV
Frequently Asked Questions
Do "écu" and "écume" mean the same thing in a sentence?
Frequency check: "écu" vs "écume" - which ranks higher?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "écu" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "écume" - compare definitions side by side with the headword page. Word entry
- This pair ranks #135,257 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "écu" and "écume" also get mixed up with nearby pairs, the highest-scored neighbour is "écu vs EPO". Nearby pair
Confusion rank #135,257 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.