Which to use
“cas” and “cu” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #19,656
- “cas” frequency rank
- #11,200
- “cu” frequency rank
- 30856
- confusion score
Side-by-Side Comparison
| Feature | cas | cu |
|---|---|---|
| Definition | Caso. | Nombre de la letra q, Q |
Where the eye mixes cas and cu
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Look-alike desk: cas vs cu
A purely visual mix-up. cas ([ˈkas]) and cu ([ˈku]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 30856, derived from the frequency rank of both members and their visual similarity.
cas is recorded at frequency rank #19,656, classified as anoun, pronounced [ˈkas]. cu is at rank #11,200, tagged as anoun, pronounced [ˈku].
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 30856, this pair ranks #209,981 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of cas vs cu
Shared letters: c. Private to "cas": as. Private to "cu": u.
"cas" · 3 letters · shape CVC · "cu" · 2 letters · shape CV
Frequently Asked Questions
Is swapping "cas" for "cu" ever safe?
In ordinary Spanish text, does "cas" or "cu" show up more?
What to do next
Eye-level mix-up between "cas" and "cu" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "cas" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "cu" - compare definitions side by side with the headword page. Word entry
- This pair ranks #209,981 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "cas" and "cu" also get mixed up with nearby pairs, the highest-scored neighbour is "cas vs cuc". Nearby pair
Confusion rank #209,981 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.