A vs A4, What's the Difference?

Which to use

“A” and “A4” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#14
“A” frequency rank: #18,920
“A4” frequency rank: 18934
confusion score

Side-by-Side Comparison

Feature	A	A4
Definition	En logique, symbole de la proposition universelle affirmative.	Format de papier de 210 mm × 297 mm.

Letter map: A vs A4

Shared letters muted; letters that set A and A4 apart highlighted. Shared run: 1.

1 ch

2 ch

Corpus notes: A and A4

A and A4 are indexed as a confusable French pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 1 extra letter(s) - “A” sits inside “A4”. Our composite confusion score for this pair is 18934, derived from the frequency rank of both members and their visual similarity.

A is recorded at frequency rank #14, classified as asymbol. A4 is at rank #18,920, tagged as asymbol.

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 18934, this pair ranks #375,862 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of A vs A4

Shared letters: a. Private to "A": -. Private to "A4": -.

"A" · 1 letters · shape V · "A4" · 1 letters · shape V

Frequently Asked Questions

Can "A" and "A4" be used interchangeably?

No. They differ by 1 extra letter(s) - “A” sits inside “A4”, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.

In ordinary French text, does "A" or "A4" show up more?

"A" is the more common of the two: it sits at frequency rank #14 in our French list, against #18,920 for "A4". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Pair "A" vs "A4" is on the table, pick a follow-up below.

Full dictionary entry for "A" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "A4" - compare definitions side by side with the headword page. Word entry
This pair ranks #375,862 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
"A" and "A4" also get mixed up with nearby pairs, the highest-scored neighbour is "A4 vs aur". Nearby pair

Confusion rank #375,862 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.