Which to use
“cost” and “costra” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #21,956
- “cost” frequency rank
- #44,080
- “costra” frequency rank
- 66036
- confusion score
Side-by-Side Comparison
| Feature | cost | costra |
|---|---|---|
| Definition | Costo. | Tejido temporal formado por las plaquetas que cubre una herida para proteger la dermis durante el proceso de regeneración. |
Where the eye mixes cost and costra
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. cost runs 4 letters (CVCC) against costra's 6 (CVCCCV) - the length gap alone is often enough to separate them once you know to check it.
Look-alike desk: cost vs costra
A purely visual mix-up. cost ([ˈkɔst]) and costra ([ˈkost̪ɾa]) 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) - “cost” sits inside “costra”. Our composite confusion score for this pair is 66036, derived from the frequency rank of both members and their visual similarity.
cost is recorded at frequency rank #21,956, classified as anoun, pronounced [ˈkɔst]. 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 66036, this pair ranks #40,924 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of cost vs costra
Shared letters: cost. Private to "cost": -. Private to "costra": ar.
"cost" · 4 letters · shape CVCC · "costra" · 6 letters · shape CVCCCV
Known mistypes of this pair
Frequently Asked Questions
Can "cost" and "costra" be used interchangeably?
In ordinary Spanish text, does "cost" or "costra" show up more?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "cost" 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 #40,924 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "cost" 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 #40,924 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.