caissonvsCarlsonWhich spelling fits?

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

Which to use

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

#24,889
“caisson” frequency rank
#35,852
“Carlson” frequency rank
60741
confusion score

Side-by-Side Comparison

Feature caisson Carlson
Definition Grande caisse sur un train à deux ou quatre roues qui servait ordinairement pour porter des vivres et des munitions à l’armée. Nom de famille.

Letter map: caisson vs Carlson

Shared letters muted; letters that set caisson and Carlson apart highlighted. Shared run: 5.

7 ch
caisson
7 ch
Carlson

Part-of-speech tell for caisson / Carlson

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: caisson is anoun and Carlsonaname. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 60741, derived from the frequency rank of both members and their visual similarity.

caisson is recorded at frequency rank #24,889, classified as anoun, pronounced \kɛ.sɔ̃\. Carlson is at rank #35,852, 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 60741, this pair ranks #95,999 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of caisson vs Carlson

Shared letters: acnos. Private to "caisson": i. Private to "Carlson": lr.

"caisson" · 7 letters · shape CVVCCVC  ·  "Carlson" · 7 letters · shape CVCCCVC

Known mistypes of this pair

  • caissonacisson · caison · caisosn · caissno · caissonn · casison · ccaisson · ciasson
  • Carlsonacrlson · calrson · carllson · carlosn · carlsno · carlsonn · carlsson · carrlson

Frequently Asked Questions

Can "caisson" and "Carlson" be used interchangeably?
No - they are not even the same part of speech. "caisson" is a noun and "Carlson" a name, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "caisson" vs "Carlson" - which ranks higher?
"caisson" is the more common of the two: it sits at frequency rank #24,889 in our French list, against #35,852 for "Carlson". 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 "caisson" and "Carlson".

  • Full dictionary entry for "caisson" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Carlson" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #95,999 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "caisson" and "Carlson" also get mixed up with nearby pairs, the highest-scored neighbour is "carlin vs Carlson". 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 #95,999 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