Which to use
“caduca” is a noun and “caduco” is an adjective - they look or sound alike but fill different roles in a sentence.
- #34,921
- “caduca” frequency rank
- #47,617
- “caduco” frequency rank
- 82538
- confusion score
Side-by-Side Comparison
| Feature | caduca | caduco |
|---|---|---|
| Definition | Epilepsia. | Decrépito, muy anciano. |
Where the eye mixes caduca and caduco
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. caduca and caduco follow the identical consonant-vowel pattern (CVCVCV). Same shape at a glance is often the real trap, independent of shared letters.
Why the eye confuses caduca with caduco
These two trip readers on the page rather than in the ear: caduca is [kaˈð̞uka] while caduco is [kaˈð̞uko]. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - a in “caduca” becomes o in “caduco”, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 82538, derived from the frequency rank of both members and their visual similarity.
caduca is recorded at frequency rank #34,921, classified as anoun, pronounced [kaˈð̞uka]. caduco is at rank #47,617, tagged as anadj, pronounced [kaˈð̞uko].
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 82538, this pair ranks #9,136 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of caduca vs caduco
Shared letters: acdu. Private to "caduca": -. Private to "caduco": o.
"caduca" · 6 letters · shape CVCVCV · "caduco" · 6 letters · shape CVCVCV
Known mistypes of this pair
Frequently Asked Questions
Do "caduca" and "caduco" mean the same thing in a sentence?
Which is more common, "caduca" or "caduco"?
Useful next steps
Eye-level mix-up between "caduca" and "caduco" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "caduca" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "caduco" - compare definitions side by side with the headword page. Word entry
- This pair ranks #9,136 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "caduca" and "caduco" also get mixed up with nearby pairs, the highest-scored neighbour is "caduco vs calco". 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 #9,136 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.