biologíavsbiológicaConfusable pair

Quick tell: biología is a noun, biológica is an adjective, so they fill different roles in a sentence.

Which to use

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

#6,984
“biología” frequency rank
#10,620
“biológica” frequency rank
17604
confusion score

Side-by-Side Comparison

Feature biología biológica
Definition Ciencia que estudia la estructura, función y desarrollo de los seres vivos Forma del femenino de biológico.

Where the eye mixes biología and biológica

Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. biología runs 8 letters (CVVCVCVV) against biológica's 9 (CVVCVCVCV) - the length gap alone is often enough to separate them once you know to check it.

8 ch
biología
9 ch
biológica

Why the eye confuses biología with biológica

These two trip readers on the page rather than in the ear: biología is [bjoloˈxia] while biológica is [bjoˈloxika]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 17604, derived from the frequency rank of both members and their visual similarity.

biología is recorded at frequency rank #6,984, classified as anoun, pronounced [bjoloˈxia]. biológica is at rank #10,620, tagged as anadj, pronounced [bjoˈloxika].

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 17604, this pair ranks #271,456 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of biología vs biológica

Shared letters: abgilo. Private to "biología": í. Private to "biológica": có.

"biología" · 8 letters · shape CVVCVCVV  ·  "biológica" · 9 letters · shape CVVCVCVCV

Frequently Asked Questions

Do "biología" and "biológica" mean the same thing in a sentence?
No - they are not even the same part of speech. "biología" is a noun and "biológica" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "biología" or "biológica" show up more?
"biología" is the more common of the two: it sits at frequency rank #6,984 in our Spanish list, against #10,620 for "biológica". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "biología" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "biológica" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #271,456 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "biología" and "biológica" also get mixed up with nearby pairs, the highest-scored neighbour is "biología vs biólogos". Nearby pair

Confusion rank #271,456 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