biológicovsbiológicosTell them apart

Which to use

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

#10,986
“biológico” frequency rank
#15,022
“biológicos” frequency rank
26008
confusion score

Side-by-Side Comparison

Feature biológico biológicos
Definition Propio de la biología o relacionado con ella. Forma del plural de biológico.

Where the eye mixes biológico and biológicos

Muted = shared; highlighted = the visual trap. They share 9 letters in sequence. biológico runs 9 letters (CVVCVCVCV) against biológicos's 10 (CVVCVCVCVC) - the length gap alone is often enough to separate them once you know to check it.

9 ch
biológico
10 ch
biológicos

Visual trap between biológico and biológicos

A purely visual mix-up. biológico ([bjoˈloxiko]) and biológicos ([bjoˈloxikos]) 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 1 extra letter(s) - “biológico” sits inside “biológicos”. Our composite confusion score for this pair is 26008, derived from the frequency rank of both members and their visual similarity.

biológico is recorded at frequency rank #10,986, classified as anadj, pronounced [bjoˈloxiko]. biológicos is at rank #15,022, tagged as anadj, pronounced [bjoˈloxikos].

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 26008, this pair ranks #233,774 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of biológico vs biológicos

Shared letters: bcgiloó. Private to "biológico": -. Private to "biológicos": s.

"biológico" · 9 letters · shape CVVCVCVCV  ·  "biológicos" · 10 letters · shape CVVCVCVCVC

Frequently Asked Questions

Is swapping "biológico" for "biológicos" ever safe?
No. They are said differently ([bjoˈloxiko] versus [bjoˈloxikos]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "biológico" vs "biológicos" - which ranks higher?
"biológico" is the more common of the two: it sits at frequency rank #10,986 in our Spanish list, against #15,022 for "biológicos". 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 "biológico" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "biológicos" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #233,774 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "biológico" and "biológicos" also get mixed up with nearby pairs, the highest-scored neighbour is "biológicos vs biólogos". Nearby pair

Confusion rank #233,774 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