Which to use
“cas” is an adjective and “clash” is a noun - they look or sound alike but fill different roles in a sentence.
- #14,713
- “cas” frequency rank
- #7,430
- “clash” frequency rank
- 22143
- confusion score
Side-by-Side Comparison
| Feature | cas | clash |
|---|---|---|
| Definition | Abbreviation of casual. | A loud sound, like the crashing together of metal objects; a crash. |
Where the eye mixes cas and clash
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Visual trap between cas and clash
These two trip readers on the page rather than in the ear: cas is /kæʒ/ while clash is /klaʃ/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 22143, derived from the frequency rank of both members and their visual similarity.
cas is recorded at frequency rank #14,713, classified as anadj, pronounced /kæʒ/. clash is at rank #7,430, tagged as anoun, pronounced /klaʃ/.
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 22143, this pair ranks #418,744 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of cas vs clash
Shared letters: acs. Private to "cas": -. Private to "clash": hl.
"cas" · 3 letters · shape CVC · "clash" · 5 letters · shape CCVCC
Known mistypes of this pair
- clash ← calsh · cclash · clahs · clashh · classh · cllash · clsah · lcash
Frequently Asked Questions
Is swapping "cas" for "clash" ever safe?
In ordinary English text, does "cas" or "clash" show up more?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "cas" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "clash" - compare definitions side by side with the headword page. Word entry
- This pair ranks #418,744 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "cas" and "clash" also get mixed up with nearby pairs, the highest-scored neighbour is "cas vs CGT". 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 #418,744 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.