cascovscasosWhat's the difference?

Which to use

“casco” and “casos” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#4,771
“casco” frequency rank
#466
“casos” frequency rank
5237
confusion score

Side-by-Side Comparison

Feature casco casos
Definition Complemento rígido de protección para la cabeza. Forma del plural de caso.

Where the eye mixes casco and casos

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

5 ch
casco
5 ch
casos

Why the eye confuses casco with casos

A purely visual mix-up. casco ([ˈkasko]) and casos ([ˈkasos]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 5237, derived from the frequency rank of both members and their visual similarity.

casco is recorded at frequency rank #4,771, classified as anoun, pronounced [ˈkasko]. casos is at rank #466, tagged as anoun, pronounced [ˈkasos].

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 5237, this pair ranks #314,144 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of casco vs casos

Shared letters: acos. Private to "casco": -. Private to "casos": -.

"casco" · 5 letters · shape CVCCV  ·  "casos" · 5 letters · shape CVCVC

Known mistypes of this pair

  • cascoacsco · cacso · cascco · casoc · cassco · ccasco · csaco
  • casosacsos · caoss · casoss · cassos · ccasos · csaos

Frequently Asked Questions

Do "casco" and "casos" mean the same thing in a sentence?
No. They are said differently ([ˈkasko] versus [ˈkasos]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "casco" vs "casos" - which ranks higher?
"casos" is the more common of the two: it sits at frequency rank #466 in our Spanish list, against #4,771 for "casco". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Eye-level mix-up between "casco" and "casos" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "casco" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "casos" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #314,144 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "casco" and "casos" also get mixed up with nearby pairs, the highest-scored neighbour is "casco vs Chasco". 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 #314,144 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list