Which to use
“T4” and “TH” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #24,791
- “T4” frequency rank
- #16,022
- “TH” frequency rank
- 40813
- confusion score
Side-by-Side Comparison
| Feature | T4 | TH |
|---|---|---|
| Definition | Quatrième trimestre : octobre, novembre et décembre. | titre hydrotimétrique (GH en allemand pour GesamtHärte). |
Where the eye mixes T4 and TH
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Why the eye confuses T4 with TH
A purely visual mix-up. T4 (\te.katʁ\) and TH (\te.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 “T4” becomes h in “TH”. Our composite confusion score for this pair is 40813, derived from the frequency rank of both members and their visual similarity.
T4 is recorded at frequency rank #24,791, classified as anoun, pronounced \te.katʁ\. TH is at rank #16,022, tagged as anoun, pronounced \te.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 40813, this pair ranks #237,698 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of T4 vs TH
Shared letters: t. Private to "T4": -. Private to "TH": h.
"T4" · 1 letters · shape C · "TH" · 2 letters · shape CC
Frequently Asked Questions
Is swapping "T4" for "TH" ever safe?
Frequency check: "T4" vs "TH" - which ranks higher?
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 "T4" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "TH" - compare definitions side by side with the headword page. Word entry
- This pair ranks #237,698 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "T4" and "TH" also get mixed up with nearby pairs, the highest-scored neighbour is "T4 vs tif". Nearby pair
Confusion rank #237,698 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.