acervovsactivoWhich spelling fits?

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

Which to use

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

#25,109
“acervo” frequency rank
#2,435
“activo” frequency rank
27544
confusion score

Side-by-Side Comparison

Feature acervo activo
Definition Cúmulo de cosas u objetos pequeños colocados desordenadamente unos sobre otros. Que es capaz de causar efecto o ser fuente de acciones.

Where the eye mixes acervo and activo

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

6 ch
acervo
6 ch
activo

Why the eye confuses acervo with activo

These two trip readers on the page rather than in the ear: acervo is [aˈseɾβ̞o] while activo is [akˈt̪iβ̞o]. 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 (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 27544, derived from the frequency rank of both members and their visual similarity.

acervo is recorded at frequency rank #25,109, classified as anoun, pronounced [aˈseɾβ̞o]. activo is at rank #2,435, tagged as anadj, pronounced [akˈt̪iβ̞o].

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 27544, this pair ranks #226,318 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of acervo vs activo

Shared letters: acov. Private to "acervo": er. Private to "activo": it.

"acervo" · 6 letters · shape VCVCCV  ·  "activo" · 6 letters · shape VCCVCV

Known mistypes of this pair

  • acervoaccervo · acerbo · acerov · acerrvo · acervvo · acevro · acrevo · aecrvo
  • activoacctivo · acitvo · actibo · actiov · activvo · acttivo · actvio · atcivo

Frequently Asked Questions

Is swapping "acervo" for "activo" ever safe?
No - they are not even the same part of speech. "acervo" is a noun and "activo" an adjective, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "acervo" vs "activo" - which ranks higher?
"activo" is the more common of the two: it sits at frequency rank #2,435 in our Spanish list, against #25,109 for "acervo". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Eye-level mix-up between "acervo" and "activo" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "acervo" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "activo" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #226,318 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "acervo" and "activo" also get mixed up with nearby pairs, the highest-scored neighbour is "acervo vs aero". 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 #226,318 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