castvscostsWhat's the difference?

Quick tell: cast is a verb, costs is a noun, so they fill different roles in a sentence.

Which to use

“cast” is a verb and “costs” is a noun - they look or sound alike but fill different roles in a sentence.

#1,686
“cast” frequency rank
#1,163
“costs” frequency rank
2849
confusion score

Side-by-Side Comparison

Feature cast costs
Definition To move, or be moved, away. plural of cost

Where the eye mixes cast and costs

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

4 ch
cast
5 ch
costs

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: cast is /kɑːst/ while costs is /ˈkɔsts/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 2849, derived from the frequency rank of both members and their visual similarity.

cast is recorded at frequency rank #1,686, classified as averb, pronounced /kɑːst/. costs is at rank #1,163, tagged as anoun, pronounced /ˈkɔsts/.

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 2849, this pair ranks #523,859 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of cast vs costs

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

"cast" · 4 letters · shape CVCC  ·  "costs" · 5 letters · shape CVCCC

Known mistypes of this pair

  • castacst · casst · castt · ccast · csat
  • costsccosts · cossts · costss · costts · cotss · csots · ocsts

Frequently Asked Questions

Can "cast" and "costs" be used interchangeably?
No - they are not even the same part of speech. "cast" is a verb and "costs" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "cast" or "costs"?
"costs" is the more common of the two: it sits at frequency rank #1,163 in our English list, against #1,686 for "cast". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

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

Source: FrequencyWords open word-frequency list