focalvsfocosConfusable pair

Quick tell: focal is a adjective, focos is a noun, so they fill different roles in a sentence.

Which to use

“focal” is an adjective and “focos” is a noun - they look or sound alike but fill different roles in a sentence.

#32,218
“focal” frequency rank
#13,914
“focos” frequency rank
46132
confusion score

Side-by-Side Comparison

Feature focal focos
Definition Que pertenece o concierne al foco. Forma del plural de foco.

Where the eye mixes focal and focos

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. focal 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
focal
5 ch
focos

Why the eye confuses focal with focos

These two trip readers on the page rather than in the ear: focal is [foˈkal] while focos is [ˈfokos]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 46132, derived from the frequency rank of both members and their visual similarity.

focal is recorded at frequency rank #32,218, classified as anadj, pronounced [foˈkal]. 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 46132, this pair ranks #127,502 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of focal vs focos

Shared letters: cfo. Private to "focal": al. Private to "focos": s.

"focal" · 5 letters · shape CVCVC  ·  "focos" · 5 letters · shape CVCVC

Known mistypes of this pair

  • focal ← fcoal · ffocal · foacl · focall · foccal · focla · ofcal
  • focos ← fcoos · ffocos · foccos · focoss · focso · foocs · ofcos

Frequently Asked Questions

Is swapping "focal" for "focos" ever safe?
No - they are not even the same part of speech. "focal" is an adjective and "focos" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "focal" vs "focos" - which ranks higher?
"focos" is the more common of the two: it sits at frequency rank #13,914 in our Spanish list, against #32,218 for "focal". 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 "focal" and "focos" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "focal" 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 #127,502 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "focal" and "focos" also get mixed up with nearby pairs, the highest-scored neighbour is "focal vs fora". 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 #127,502 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