ópticavsópticoWhich spelling fits?

Which to use

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

#8,459
“óptica” frequency rank
#20,863
“óptico” frequency rank
29322
confusion score

Side-by-Side Comparison

Feature óptica óptico
Definition Forma del femenino de óptico. Relacionado o perteneciente a la óptica.

Where the eye mixes óptica and óptico

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. óptica and óptico follow the identical consonant-vowel pattern (VCCVCV). Same shape at a glance is often the real trap, independent of shared letters.

6 ch
óptica
6 ch
óptico

Look-alike desk: óptica vs óptico

A purely visual mix-up. óptica ([ˈopt̪ika]) and óptico ([ˈopt̪iko]) 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 “óptica” becomes o in “óptico”. Our composite confusion score for this pair is 29322, derived from the frequency rank of both members and their visual similarity.

óptica is recorded at frequency rank #8,459, classified as anadj, pronounced [ˈopt̪ika]. óptico is at rank #20,863, tagged as anadj, pronounced [ˈopt̪iko].

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 29322, this pair ranks #217,574 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of óptica vs óptico

Shared letters: ciptó. Private to "óptica": a. Private to "óptico": o.

"óptica" · 6 letters · shape VCCVCV  ·  "óptico" · 6 letters · shape VCCVCV

Frequently Asked Questions

Is swapping "óptica" for "óptico" ever safe?
No. They are said differently ([ˈopt̪ika] versus [ˈopt̪iko]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "óptica" vs "óptico" - which ranks higher?
"óptica" is the more common of the two: it sits at frequency rank #8,459 in our Spanish list, against #20,863 for "óptico". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "óptica" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "óptico" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #217,574 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "óptica" and "óptico" also get mixed up with nearby pairs, the highest-scored neighbour is "óptico vs óptimos". Nearby pair

Confusion rank #217,574 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