Which to use
“A4” is a symbol and “af” is a preposition - they look or sound alike but fill different roles in a sentence.
- #18,920
- “A4” frequency rank
- #14,405
- “af” frequency rank
- 33325
- confusion score
Side-by-Side Comparison
| Feature | A4 | af |
|---|---|---|
| Definition | Format de papier de 210 mm × 297 mm. | De. Note d’usage : la préposition est suivie du datif. |
Letter map: A4 vs af
Shared letters muted; letters that set A4 and af apart highlighted. Shared run: 1.
Grammar separator: A4 vs af
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: A4 is asymbol and afapreposition. On the page they differ by a single letter - 4 in “A4” becomes f in “af”. Our composite confusion score for this pair is 33325, derived from the frequency rank of both members and their visual similarity.
A4 is recorded at frequency rank #18,920, classified as asymbol. af is at rank #14,405, tagged as aprep, pronounced \aːv\.
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 33325, this pair ranks #291,406 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of A4 vs af
Shared letters: a. Private to "A4": -. Private to "af": f.
"A4" · 1 letters · shape V · "af" · 2 letters · shape VC
Frequently Asked Questions
Is swapping "A4" for "af" ever safe?
In ordinary French text, does "A4" or "af" show up more?
Useful next steps
Done with this confusable. These links stay specific to "A4" and "af".
- Full dictionary entry for "A4" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "af" - compare definitions side by side with the headword page. Word entry
- This pair ranks #291,406 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "A4" and "af" also get mixed up with nearby pairs, the highest-scored neighbour is "A4 vs aur". Nearby pair
Confusion rank #291,406 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.