CDD vs CSR, What's the Difference?

Which to use

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

#11,538
“CDD” frequency rank: #45,537
“CSR” frequency rank: 57075
confusion score

Side-by-Side Comparison

Feature	CDD	CSR
Definition	Contrat à durée déterminée, type de contrat de travail en France.	Demande de signature de certificat : message envoyé à partir d'un demandeur à une autorité de certification afin de demander un certificat d'identité numérique.

Where the eye mixes CDD and CSR

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

3 ch

CDD

3 ch

CSR

Why the eye confuses CDD with CSR

A purely visual mix-up. CDD (\se.de.de\) and CSR (\se.ɛs.ɛʁ\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 57075, derived from the frequency rank of both members and their visual similarity.

CDD is recorded at frequency rank #11,538, classified as anoun, pronounced \se.de.de\. CSR is at rank #45,537, tagged as anoun, pronounced \se.ɛs.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 57075, this pair ranks #117,182 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of CDD vs CSR

Shared letters: c. Private to "CDD": d. Private to "CSR": rs.

"CDD" · 3 letters · shape CCC · "CSR" · 3 letters · shape CCC

Frequently Asked Questions

Is swapping "CDD" for "CSR" ever safe?

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

Which is more common, "CDD" or "CSR"?

"CDD" is the more common of the two: it sits at frequency rank #11,538 in our French list, against #45,537 for "CSR". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

Full dictionary entry for "CDD" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "CSR" - compare definitions side by side with the headword page. Word entry
This pair ranks #117,182 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
"CDD" and "CSR" also get mixed up with nearby pairs, the highest-scored neighbour is "ciro vs CSR". Nearby pair

Confusion rank #117,182 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.