caservscassWhich spelling fits?

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

Which to use

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

#22,196
“caser” frequency rank
#17,896
“cass” frequency rank
40092
confusion score

Side-by-Side Comparison

Feature caser cass
Definition Mettre dans une case. Cassis.

Where the eye mixes caser and cass

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
caser
4 ch
cass

Look-alike desk: caser vs cass

These two trip readers on the page rather than in the ear: caser is \kɑ.ze\ while cass is \kas\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 40092, derived from the frequency rank of both members and their visual similarity.

caser is recorded at frequency rank #22,196, classified as averb, pronounced \kɑ.ze\. cass is at rank #17,896, tagged as anoun, pronounced \kas\.

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 40092, this pair ranks #243,106 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of caser vs cass

Shared letters: acs. Private to "caser": er. Private to "cass": -.

"caser" · 5 letters · shape CVCVC  ·  "cass" · 4 letters · shape CVCC

Known mistypes of this pair

  • caseracser · caesr · caserr · casre · ccaser · csaer
  • cassacss · ccass · csas

Frequently Asked Questions

Can "caser" and "cass" be used interchangeably?
No - they are not even the same part of speech. "caser" is a verb and "cass" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "caser" vs "cass" - which ranks higher?
"cass" is the more common of the two: it sits at frequency rank #17,896 in our French list, against #22,196 for "caser". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "caser" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "cass" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #243,106 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "caser" and "cass" also get mixed up with nearby pairs, the highest-scored neighbour is "caser vs casseur". 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 #243,106 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