Which to use
“acer” and “acier” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #26,944
- “acer” frequency rank
- #3,974
- “acier” frequency rank
- 30918
- confusion score
Side-by-Side Comparison
| Feature | acer | acier |
|---|---|---|
| Definition | Genre botanique des érables, arbres appartenant à la famille des Sapindacées.→ voir Acer | Alliage de fer et de carbone, dont la proportion de celui-ci ne dépasse pas 2 %, susceptible d’acquérir, par certains procédés, un grand degré de dureté. |
Where the eye mixes acer and acier
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. acer runs 4 letters (VCVC) against acier's 5 (VCVVC) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between acer and acier
A purely visual mix-up. acer (\a.sɛʁ\) and acier (\a.sje\) 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 30918, derived from the frequency rank of both members and their visual similarity.
acer is recorded at frequency rank #26,944, classified as anoun, pronounced \a.sɛʁ\. acier is at rank #3,974, tagged as anoun, pronounced \a.sje\.
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 30918, this pair ranks #307,166 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of acer vs acier
Shared letters: acer. Private to "acer": -. Private to "acier": i.
"acer" · 4 letters · shape VCVC · "acier" · 5 letters · shape VCVVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "acer" for "acier" ever safe?
Which is more common, "acer" or "acier"?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "acer" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "acier" - compare definitions side by side with the headword page. Word entry
- This pair ranks #307,166 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "acer" and "acier" also get mixed up with nearby pairs, the highest-scored neighbour is "acer vs avéra". 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 #307,166 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.