castvscastorWhat's the difference?

Which to use

“cast” and “castor” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#17,723
“cast” frequency rank
#16,007
“castor” frequency rank
33730
confusion score

Side-by-Side Comparison

Feature cast castor
Definition arremesso roedor semi-aquáticos da família Castoridae, nativo da América do Norte e da Europa

Where the spellings diverge

Shared letters are muted; the letters that actually set cast and castor apart are highlighted. They share 4 letters in sequence, which is exactly why the eye skips the difference.

4 ch
cast
6 ch
castor

Spelling & Dictionary Insight

A purely visual mix-up. cast (/kæst/) and castor (/kɐsˈtoɾ/) 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 2 extra letter(s) - “cast” sits inside “castor”. Our composite confusion score for this pair is 33730, derived from the frequency rank of both members and their visual similarity.

cast is recorded at frequency rank #17,723, classified as anoun, pronounced /kæst/. castor is at rank #16,007, tagged as anoun, pronounced /kɐsˈtoɾ/.

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 33730, this pair ranks #33,698 of 75,631 scored Portuguese 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

  • castacst · casst · castt · ccast · csat
  • castoracstor · casotr · casstor · castorr · casttor · catsor · ccastor · csator

Frequency comparison

cast#17,723
castor#16,007

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "cast" and "castor" be used interchangeably?
No. They are said differently (/kæst/ versus /kɐsˈtoɾ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "cast" or "castor"?
"castor" is the more common of the two: it sits at frequency rank #16,007 in our Portuguese list, against #17,723 for "cast". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering cast vs castor

The fastest way to pick the right one every time.

  • Read both glosses above and match the meaning you intend, only context separates this pair.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “cast” entry
  • Browse more pairs most likely to be confused. Most confusable

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list