Which to use
“PCB” and “PCR” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #45,779
- “PCB” frequency rank
- #39,452
- “PCR” frequency rank
- 85231
- confusion score
Side-by-Side Comparison
| Feature | PCB | PCR |
|---|---|---|
| Definition | Polychlorobiphényle. | Amplification en chaîne par polymérase, méthode qui permet de créer un grand nombre de copies d’une séquence d’ADN ou d’ARN. |
Where the eye mixes PCB and PCR
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. PCB and PCR follow the identical consonant-vowel pattern (CCC). Same shape at a glance is often the real trap, independent of shared letters.
Look-alike desk: PCB vs PCR
A purely visual mix-up. PCB (\pe.se.be\) and PCR (\pe.se.ɛʁ\) 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 - b in “PCB” becomes r in “PCR”. Our composite confusion score for this pair is 85231, derived from the frequency rank of both members and their visual similarity.
PCB is recorded at frequency rank #45,779, classified as anoun, pronounced \pe.se.be\. PCR is at rank #39,452, tagged as anoun, pronounced \pe.se.ɛʁ\.
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 85231, this pair ranks #11,678 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of PCB vs PCR
Shared letters: cp. Private to "PCB": b. Private to "PCR": r.
"PCB" · 3 letters · shape CCC · "PCR" · 3 letters · shape CCC
Frequently Asked Questions
Do "PCB" and "PCR" mean the same thing in a sentence?
Frequency check: "PCB" vs "PCR" - which ranks higher?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "PCB" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "PCR" - compare definitions side by side with the headword page. Word entry
- This pair ranks #11,678 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "PCB" and "PCR" also get mixed up with nearby pairs, the highest-scored neighbour is "PCB vs pio". Nearby pair
Confusion rank #11,678 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.