castvscostWhat's the difference?

Which to use

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

#17,723
“cast” frequency rank
#22,928
“cost” frequency rank
40651
confusion score

Side-by-Side Comparison

Feature cast cost
Definition arremesso custo

Where the eye mixes cast and cost

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

4 ch
cast
4 ch
cost

Visual trap between cast and cost

A purely visual mix-up. cast (/kæst/) and cost (/ˈkɔst/) 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 a single letter - a in “cast” becomes o in “cost”. Our composite confusion score for this pair is 40651, 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/. cost is at rank #22,928, tagged as anoun, pronounced /ˈkɔst/.

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 40651, this pair ranks #25,415 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of cast vs cost

Shared letters: cst. Private to "cast": a. Private to "cost": o.

"cast" · 4 letters · shape CVCC  ·  "cost" · 4 letters · shape CVCC

Known mistypes of this pair

  • castacst · casst · castt · ccast · csat
  • costccost · cosst · costt · cots · csot · ocst

Frequently Asked Questions

Do "cast" and "cost" mean the same thing in a sentence?
No. They are said differently (/kæst/ versus /ˈkɔst/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "cast" vs "cost" - which ranks higher?
"cast" is the more common of the two: it sits at frequency rank #17,723 in our Portuguese list, against #22,928 for "cost". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "cast" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "cost" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #25,415 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "cast" and "cost" also get mixed up with nearby pairs, the highest-scored neighbour is "copta vs cost". 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 #25,415 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list