Which to use
“castaño” is a noun and “castas” is an adjective - they look or sound alike but fill different roles in a sentence.
- #12,542
- “castaño” frequency rank
- #17,066
- “castas” frequency rank
- 29608
- confusion score
Side-by-Side Comparison
| Feature | castaño | castas |
|---|---|---|
| Definition | (Castanea sativa) Árbol robusto de la familia de las fagáceas de tronco grueso, con corteza lisa al principio y agrietada al envejecer. Las hojas son lanceoladas, largas, brillantes y con el margen dentado. En la base de las inflorescencias masculinas se hallan las femeninas. Su fruto las castañas que en número de dos o tres se encuentran encerradas por un envoltorio espinoso llamado erizo. | Forma del femenino plural de casto. |
Where the spellings diverge
Shared letters are muted; the letters that actually set castaño and castas apart are highlighted. They share 5 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
castaño and castas form a confusable pair in the Spanish index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They differ by 1 letter(s) in length - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 29608, derived from the frequency rank of both members and their visual similarity.
castaño is recorded at frequency rank #12,542, classified as anoun, pronounced [kasˈt̪aɲo]. castas is at rank #17,066, tagged as anadj, pronounced [ˈkast̪as].
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 29608, this pair ranks #216,146 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Frequency comparison
Frequently Asked Questions
Can "castaño" and "castas" be used interchangeably?
Remembering castaño vs castas
The fastest way to pick the right one every time.
- Check the role first: if you need a noun, it's “castaño”; for an adjective, it's “castas”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “castaño” entry
- Browse more pairs most likely to be confused. Most confusable