Which to use
“castillan” is an adjective and “Castillo” is a name - they look or sound alike but fill different roles in a sentence.
- #47,775
- “castillan” frequency rank
- #34,458
- “Castillo” frequency rank
- 82233
- confusion score
Side-by-Side Comparison
| Feature | castillan | Castillo |
|---|---|---|
| Definition | Relatif à la Castille. | Nom de famille. |
Letter map: castillan vs Castillo
Shared letters muted; letters that set castillan and Castillo apart highlighted. Shared run: 7. castillan runs 9 letters (CVCCVCCVC) against Castillo's 8 (CVCCVCCV) - the length gap alone is often enough to separate them once you know to check it.
Grammar separator: castillan vs Castillo
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: castillan is anadjective and Castilloaname. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 82233, derived from the frequency rank of both members and their visual similarity.
castillan is recorded at frequency rank #47,775, classified as anadj, pronounced \kas.ti.jɑ̃\. Castillo is at rank #34,458, 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 82233, this pair ranks #17,130 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of castillan vs Castillo
Shared letters: acilst. Private to "castillan": n. Private to "Castillo": o.
"castillan" · 9 letters · shape CVCCVCCVC · "Castillo" · 8 letters · shape CVCCVCCV
Known mistypes of this pair
Frequently Asked Questions
Do "castillan" and "Castillo" mean the same thing in a sentence?
Which is more common, "castillan" or "Castillo"?
What to do next
You've compared "castillan" and "Castillo". Here's where to go from here.
- Full dictionary entry for "castillan" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "Castillo" - compare definitions side by side with the headword page. Word entry
- This pair ranks #17,130 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "castillan" and "Castillo" also get mixed up with nearby pairs, the highest-scored neighbour is "Castellane vs castillan". 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 #17,130 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.