A1vsASCWhat's the difference?

Which to use

“A1” and “ASC” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#17,858
“A1” frequency rank
#45,446
“ASC” frequency rank
63304
confusion score

Side-by-Side Comparison

Feature A1 ASC
Definition Format d'une feuille de 594,6 mm sur 840,9. Partenariat entre un producteur agricole et un consommateur qui s’engage avant une saison à l’achat hebdomadaire de paniers de légumes.

Where the eye mixes A1 and ASC

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

2 ch
A1
3 ch
ASC

Visual trap between A1 and ASC

A purely visual mix-up. A1 (\a.œ̃\) and ASC (\a.ɛs.se\) 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 63304, 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\. ASC is at rank #45,446, tagged as anoun, pronounced \a.ɛs.se\.

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 63304, this pair ranks #82,649 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of A1 vs ASC

Shared letters: a. Private to "A1": -. Private to "ASC": cs.

"A1" · 1 letters · shape V  ·  "ASC" · 3 letters · shape VCC

Frequently Asked Questions

Is swapping "A1" for "ASC" ever safe?
No. They are said differently (\a.œ̃\ versus \a.ɛs.se\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary French text, does "A1" or "ASC" show up more?
"A1" is the more common of the two: it sits at frequency rank #17,858 in our French list, against #45,446 for "ASC". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "A1" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ASC" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #82,649 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "A1" and "ASC" also get mixed up with nearby pairs, the highest-scored neighbour is "ASC vs aur". Nearby pair

Confusion rank #82,649 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