T4 vs TD, What's the Difference?

Which to use

“T4” and “TD” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#24,791
“T4” frequency rank: #13,483
“TD” frequency rank: 38274
confusion score

Side-by-Side Comparison

Feature	T4	TD
Definition	Quatrième trimestre : octobre, novembre et décembre.	Travaux dirigés (créneaux d’enseignement).

Where the eye mixes T4 and TD

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

2 ch

Visual trap between T4 and TD

A purely visual mix-up. T4 (\te.katʁ\) and TD (\te.de\) 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 d in “TD”. Our composite confusion score for this pair is 38274, 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\. TD is at rank #13,483, tagged as anoun, pronounced \te.de\.

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 38274, this pair ranks #256,429 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of T4 vs TD

Shared letters: t. Private to "T4": -. Private to "TD": d.

"T4" · 1 letters · shape C · "TD" · 2 letters · shape CC

Frequently Asked Questions

Is swapping "T4" for "TD" ever safe?

No. They are said differently (\te.katʁ\ versus \te.de\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.

In ordinary French text, does "T4" or "TD" show up more?

"TD" is the more common of the two: it sits at frequency rank #13,483 in our French list, against #24,791 for "T4". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Eye-level mix-up between "T4" and "TD" is sorted above. Next: full entries or other pairs that share a letter shape.

Full dictionary entry for "T4" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "TD" - compare definitions side by side with the headword page. Word entry
This pair ranks #256,429 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
"T4" and "TD" also get mixed up with nearby pairs, the highest-scored neighbour is "T4 vs tif". Nearby pair

Confusion rank #256,429 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.