Which to use
“cast” is a verb and “castor” is a noun - they look or sound alike but fill different roles in a sentence.
- #24,771
- “cast” frequency rank
- #24,417
- “castor” frequency rank
- 49188
- confusion score
Side-by-Side Comparison
| Feature | cast | castor |
|---|---|---|
| Definition | Arrojar, lanzar, tirar. | Castor canadensis. Animal que hace diques, con gran daño para el entorno. Por ejempo, en Tierra del Fuego el castor es una plaga |
Where the eye mixes cast and castor
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Look-alike desk: cast vs castor
These two trip readers on the page rather than in the ear: cast is /kɑːst/ while castor is [kasˈt̪oɾ]. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “cast” sits inside “castor”, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 49188, derived from the frequency rank of both members and their visual similarity.
cast is recorded at frequency rank #24,771, classified as averb, pronounced /kɑːst/. castor is at rank #24,417, tagged as anoun, pronounced [kasˈt̪oɾ].
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 49188, this pair ranks #110,233 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of cast vs castor
Shared letters: acst. Private to "cast": -. Private to "castor": or.
"cast" · 4 letters · shape CVCC · "castor" · 6 letters · shape CVCCVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "cast" for "castor" ever safe?
Frequency check: "cast" vs "castor" - which ranks higher?
Useful next steps
Eye-level mix-up between "cast" and "castor" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "cast" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "castor" - compare definitions side by side with the headword page. Word entry
- This pair ranks #110,233 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "cast" and "castor" also get mixed up with nearby pairs, the highest-scored neighbour is "cast vs curt". 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 #110,233 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.