focasvsfocosWhich spelling fits?

Which to use

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

#27,995
“focas” frequency rank
#13,914
“focos” frequency rank
41909
confusion score

Side-by-Side Comparison

Feature focas focos
Definition Forma del plural de foca. Forma del plural de foco.

Where the eye mixes focas and focos

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. focas and focos follow the identical consonant-vowel pattern (CVCVC). Same shape at a glance is often the real trap, independent of shared letters.

5 ch
focas
5 ch
focos

Why the eye confuses focas with focos

A purely visual mix-up. focas ([ˈfokas]) and focos ([ˈfokos]) 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 “focas” becomes o in “focos”. Our composite confusion score for this pair is 41909, derived from the frequency rank of both members and their visual similarity.

focas is recorded at frequency rank #27,995, classified as anoun, pronounced [ˈfokas]. focos is at rank #13,914, tagged as anoun, pronounced [ˈfokos].

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 41909, this pair ranks #151,130 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of focas vs focos

Shared letters: cfos. Private to "focas": a. Private to "focos": -.

"focas" · 5 letters · shape CVCVC  ·  "focos" · 5 letters · shape CVCVC

Known mistypes of this pair

  • focas ← fcoas · ffocas · foacs · focass · foccas · focsa · ofcas
  • focos ← fcoos · ffocos · foccos · focoss · focso · foocs · ofcos

Frequently Asked Questions

Is swapping "focas" for "focos" ever safe?
No. They are said differently ([ˈfokas] versus [ˈfokos]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "focas" or "focos"?
"focos" is the more common of the two: it sits at frequency rank #13,914 in our Spanish list, against #27,995 for "focas". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "focas" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "focos" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #151,130 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "focas" and "focos" also get mixed up with nearby pairs, the highest-scored neighbour is "flojas vs focas". 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 #151,130 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