investigaciónvsinvestigacionesTell them apart

Which to use

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

#574
“investigación” frequency rank
#2,173
“investigaciones” frequency rank
2747
confusion score

Side-by-Side Comparison

Feature investigación investigaciones
Definition Acción o efecto de investigar. Forma del plural de investigación.

Where the eye mixes investigación and investigaciones

Muted = shared; highlighted = the visual trap. They share 12 letters in sequence. investigación runs 13 letters (VCCVCCVCVCVVC) against investigaciones's 15 (VCCVCCVCVCVVCVC) - the length gap alone is often enough to separate them once you know to check it.

13 ch
investigación
15 ch
investigaciones

Visual trap between investigación and investigaciones

A purely visual mix-up. investigación ([ĩmbest̪iɣ̞aˈsjõn]) and investigaciones ([ĩmbest̪iɣ̞aˈsjones]) 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 2 letter(s) in length. Our composite confusion score for this pair is 2747, derived from the frequency rank of both members and their visual similarity.

investigación is recorded at frequency rank #574, classified as anoun, pronounced [ĩmbest̪iɣ̞aˈsjõn]. investigaciones is at rank #2,173, tagged as anoun, pronounced [ĩmbest̪iɣ̞aˈsjones].

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 2747, this pair ranks #319,733 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of investigación vs investigaciones

Shared letters: aceginstv. Private to "investigación": ó. Private to "investigaciones": o.

"investigación" · 13 letters · shape VCCVCCVCVCVVC  ·  "investigaciones" · 15 letters · shape VCCVCCVCVCVVCVC

Known mistypes of this pair

  • investigaciones ← inbestigaciones · inevstigaciones · innvestigaciones · invesitgaciones · invesstigaciones · investgiaciones · investiagciones · investigacciones

Frequently Asked Questions

Can "investigación" and "investigaciones" be used interchangeably?
No. They are said differently ([ĩmbest̪iɣ̞aˈsjõn] versus [ĩmbest̪iɣ̞aˈsjones]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "investigación" vs "investigaciones" - which ranks higher?
"investigación" is the more common of the two: it sits at frequency rank #574 in our Spanish list, against #2,173 for "investigaciones". 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 "investigación" and "investigaciones" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "investigación" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "investigaciones" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #319,733 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "investigación" and "investigaciones" also get mixed up with nearby pairs, the highest-scored neighbour is "investigación vs investigaron". 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 #319,733 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