Which to use
“B1” and “BT” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #21,862
- “B1” frequency rank
- #25,234
- “BT” frequency rank
- 47096
- confusion score
Side-by-Side Comparison
| Feature | B1 | BT |
|---|---|---|
| Definition | Habilitation électrique qualifiant une personne autorisée à effectuer des travaux d’ordre électrique en basse tension selon la norme NF C 18-510. | Basse tension. |
Where the eye mixes B1 and BT
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Why the eye confuses B1 with BT
A purely visual mix-up. B1 (\be.œ̃\) and BT (\be.te\) 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 a single letter - 1 in “B1” becomes t in “BT”. Our composite confusion score for this pair is 47096, 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\. BT is at rank #25,234, tagged as anoun, pronounced \be.te\.
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 47096, this pair ranks #189,679 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of B1 vs BT
Shared letters: b. Private to "B1": -. Private to "BT": t.
"B1" · 1 letters · shape C · "BT" · 2 letters · shape CC
Frequently Asked Questions
Do "B1" and "BT" mean the same thing in a sentence?
Which is more common, "B1" or "BT"?
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 "B1" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "BT" - compare definitions side by side with the headword page. Word entry
- This pair ranks #189,679 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "B1" and "BT" also get mixed up with nearby pairs, the highest-scored neighbour is "ber vs BT". Nearby pair
Confusion rank #189,679 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.