B1vsbunWhat's the difference?

Which to use

“B1” and “bun” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#21,862
“B1” frequency rank
#45,486
“bun” frequency rank
67348
confusion score

Side-by-Side Comparison

Feature B1 bun
Definition Habilitation électrique qualifiant une personne autorisée à effectuer des travaux d’ordre électrique en basse tension selon la norme NF C 18-510. Brioche, petit pain au lait.

Where the eye mixes B1 and bun

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

2 ch
B1
3 ch
bun

Visual trap between B1 and bun

A purely visual mix-up. B1 (\be.œ̃\) and bun (\bœn\) 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 67348, derived from the frequency rank of both members and their visual similarity.

B1 is recorded at frequency rank #21,862, classified as anoun, pronounced \be.œ̃\. bun is at rank #45,486, tagged as anoun, pronounced \bœn\.

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 67348, this pair ranks #63,816 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of B1 vs bun

Shared letters: b. Private to "B1": -. Private to "bun": nu.

"B1" · 1 letters · shape C  ·  "bun" · 3 letters · shape CVC

Frequently Asked Questions

Is swapping "B1" for "bun" ever safe?
No. They are said differently (\be.œ̃\ versus \bœn\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary French text, does "B1" or "bun" show up more?
"B1" is the more common of the two: it sits at frequency rank #21,862 in our French list, against #45,486 for "bun". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "B1" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "bun" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #63,816 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "B1" and "bun" also get mixed up with nearby pairs, the highest-scored neighbour is "bun vs bury". Nearby pair

Confusion rank #63,816 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