cosavscosoConfusable pair

Which to use

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

#234
“cosa” frequency rank
#21,620
“coso” frequency rank
21854
confusion score

Side-by-Side Comparison

Feature cosa coso
Definition Nombre con el que se puede designar un objeto real o imaginario, una abstracción o un concepto sin tener que definirlo o nombrarlo. Persona cuyo nombre se desconoce, se ha olvidado o se decide omitir, despectivamente o no.

Where the eye mixes cosa and coso

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. cosa and coso follow the identical consonant-vowel pattern (CVCV). Same shape at a glance is often the real trap, independent of shared letters.

4 ch
cosa
4 ch
coso

Why the eye confuses cosa with coso

A purely visual mix-up. cosa ([ˈkosa]) and coso ([ˈkoso]) 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 “cosa” becomes o in “coso”. Our composite confusion score for this pair is 21854, derived from the frequency rank of both members and their visual similarity.

cosa is recorded at frequency rank #234, classified as anoun, pronounced [ˈkosa]. coso is at rank #21,620, tagged as anoun, pronounced [ˈkoso].

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 21854, this pair ranks #253,051 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of cosa vs coso

Shared letters: cos. Private to "cosa": a. Private to "coso": -.

"cosa" · 4 letters · shape CVCV  ·  "coso" · 4 letters · shape CVCV

Known mistypes of this pair

  • cosaccosa · coas · csoa · ocsa
  • cosoccoso · coos · cosso · csoo · ocso

Frequently Asked Questions

Is swapping "cosa" for "coso" ever safe?
No. They are said differently ([ˈkosa] versus [ˈkoso]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "cosa" or "coso"?
"cosa" is the more common of the two: it sits at frequency rank #234 in our Spanish list, against #21,620 for "coso". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "cosa" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "coso" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #253,051 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "cosa" and "coso" also get mixed up with nearby pairs, the highest-scored neighbour is "coin vs coso". 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 #253,051 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