Which to use
“P4” and “pH” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #46,332
- “P4” frequency rank
- #10,377
- “pH” frequency rank
- 56709
- confusion score
Side-by-Side Comparison
| Feature | P4 | pH |
|---|---|---|
| Definition | Réformé pour problèmes psychiques. | Opposé du logarithme décimal de la concentration en ions hydroniums d’une solution aqueuse. Échelle de mesure de l’acidité d’une solution. ( pH = -log₁₀ [H⁺]) |
Where the eye mixes P4 and pH
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Spelling & Dictionary Insight
A purely visual mix-up. P4 (\pe.katʁ\) and pH (\pe.aʃ\) 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 - 4 in “P4” becomes h in “pH”. Our composite confusion score for this pair is 56709, derived from the frequency rank of both members and their visual similarity.
P4 is recorded at frequency rank #46,332, classified as anoun, pronounced \pe.katʁ\. pH is at rank #10,377, tagged as anoun, pronounced \pe.aʃ\.
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 56709, this pair ranks #119,408 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of P4 vs pH
Shared letters: p. Private to "P4": -. Private to "pH": h.
"P4" · 1 letters · shape C · "pH" · 2 letters · shape CC