Which to use
“costar” is a verb and “costra” is a noun - they look or sound alike but fill different roles in a sentence.
- #10,475
- “costar” frequency rank
- #44,080
- “costra” frequency rank
- 54555
- confusion score
Side-by-Side Comparison
| Feature | costar | costra |
|---|---|---|
| Definition | Tener un valor en dinero. | Tejido temporal formado por las plaquetas que cubre una herida para proteger la dermis durante el proceso de regeneración. |
Where the eye mixes costar and costra
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. costar (CVCCVC) and costra (CVCCCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Why the eye confuses costar with costra
These two trip readers on the page rather than in the ear: costar is [kosˈt̪aɾ] while costra is [ˈkost̪ɾa]. Spoken aloud the problem disappears. In writing it persists, because they differ only by swapping two adjacent letters (ar ↔ ra) - a transposition the eye reads straight past, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 54555, derived from the frequency rank of both members and their visual similarity.
costar is recorded at frequency rank #10,475, classified as averb, pronounced [kosˈt̪aɾ]. costra is at rank #44,080, tagged as anoun, pronounced [ˈkost̪ɾa].
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 54555, this pair ranks #82,802 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of costar vs costra
Shared letters: acorst. Private to "costar": -. Private to "costra": -.
"costar" · 6 letters · shape CVCCVC · "costra" · 6 letters · shape CVCCCV
Known mistypes of this pair
Frequently Asked Questions
Can "costar" and "costra" be used interchangeably?
In ordinary Spanish text, does "costar" or "costra" show up more?
What to do next
Eye-level mix-up between "costar" and "costra" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "costar" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "costra" - compare definitions side by side with the headword page. Word entry
- This pair ranks #82,802 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "costar" and "costra" also get mixed up with nearby pairs, the highest-scored neighbour is "casará vs costra". 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 #82,802 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.