cassvsCSNWhich spelling fits?

Quick tell: cass is a noun, CSN is a name, so they fill different roles in a sentence.

Which to use

“cass” is a noun and “CSN” is a name - they look or sound alike but fill different roles in a sentence.

#17,896
“cass” frequency rank
#40,703
“CSN” frequency rank
58599
confusion score

Side-by-Side Comparison

Feature cass CSN
Definition Cassis. En France, plus haute autorité du notariat.

Letter map: cass vs CSN

Shared letters muted; letters that set cass and CSN apart highlighted. Shared run: 2.

4 ch
cass
3 ch
CSN

Part-of-speech tell for cass / CSN

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: cass is anoun and CSNaname. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 58599, derived from the frequency rank of both members and their visual similarity.

cass is recorded at frequency rank #17,896, classified as anoun, pronounced \kas\. CSN is at rank #40,703, tagged as aname.

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 58599, this pair ranks #108,114 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of cass vs CSN

Shared letters: cs. Private to "cass": a. Private to "CSN": n.

"cass" · 4 letters · shape CVCC  ·  "CSN" · 3 letters · shape CCC

Known mistypes of this pair

  • cassacss · ccass · csas

Frequently Asked Questions

Can "cass" and "CSN" be used interchangeably?
No - they are not even the same part of speech. "cass" is a noun and "CSN" a name, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "cass" or "CSN"?
"cass" is the more common of the two: it sits at frequency rank #17,896 in our French list, against #40,703 for "CSN". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Done with this confusable. These links stay specific to "cass" and "CSN".

  • Full dictionary entry for "cass" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "CSN" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #108,114 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "cass" and "CSN" also get mixed up with nearby pairs, the highest-scored neighbour is "CCE vs CSN". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #108,114 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list