Which to use
“A1” and “acs” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #17,858
- “A1” frequency rank
- #45,982
- “acs” frequency rank
- 63840
- confusion score
Side-by-Side Comparison
| Feature | A1 | acs |
|---|---|---|
| Definition | Format d'une feuille de 594,6 mm sur 840,9. | Pluriel d’ac. |
Where the eye mixes A1 and acs
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Look-alike desk: A1 vs acs
A purely visual mix-up. A1 (\a.œ̃\) and acs (\ˈat͡s\) 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 63840, derived from the frequency rank of both members and their visual similarity.
A1 is recorded at frequency rank #17,858, classified as anoun, pronounced \a.œ̃\. acs is at rank #45,982, tagged as anoun, pronounced \ˈat͡s\.
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 63840, this pair ranks #79,956 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of A1 vs acs
Shared letters: a. Private to "A1": -. Private to "acs": cs.
"A1" · 1 letters · shape V · "acs" · 3 letters · shape VCC
Frequently Asked Questions
Do "A1" and "acs" mean the same thing in a sentence?
Frequency check: "A1" vs "acs" - which ranks higher?
Useful next steps
Eye-level mix-up between "A1" and "acs" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "A1" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "acs" - compare definitions side by side with the headword page. Word entry
- This pair ranks #79,956 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "A1" and "acs" also get mixed up with nearby pairs, the highest-scored neighbour is "acs vs aves". Nearby pair
Confusion rank #79,956 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.