aceravsapenaTell them apart

Quick tell: acera is a noun, apena is a verb, so they fill different roles in a sentence.

Which to use

“acera” is a noun and “apena” is a verb - they look or sound alike but fill different roles in a sentence.

#14,997
“acera” frequency rank
#36,920
“apena” frequency rank
51917
confusion score

Side-by-Side Comparison

Feature acera apena
Definition Orilla de la calle por la que se efectúa el tránsito peatonal. Tercera persona del singular (él, ella, ello; usted, 2.ª persona) del presente de indicativo de apenar o de apenarse.

Where the eye mixes acera and apena

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. acera and apena follow the identical consonant-vowel pattern (VCVCV). Same shape at a glance is often the real trap, independent of shared letters.

5 ch
acera
5 ch
apena

Look-alike desk: acera vs apena

These two trip readers on the page rather than in the ear: acera is [aˈseɾa] while apena is [aˈpena]. 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 verb), which is usually the fastest check. Our composite confusion score for this pair is 51917, derived from the frequency rank of both members and their visual similarity.

acera is recorded at frequency rank #14,997, classified as anoun, pronounced [aˈseɾa]. apena is at rank #36,920, tagged as averb, pronounced [aˈpena].

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 51917, this pair ranks #95,370 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of acera vs apena

Shared letters: ae. Private to "acera": cr. Private to "apena": np.

"acera" · 5 letters · shape VCVCV  ·  "apena" · 5 letters · shape VCVCV

Known mistypes of this pair

  • acera ← accera · acear · acerra · acrea · aecra · asera · caera
  • apena ← aepna · apean · apenna · apnea · appena · paena

Frequently Asked Questions

Do "acera" and "apena" mean the same thing in a sentence?
No - they are not even the same part of speech. "acera" is a noun and "apena" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "acera" or "apena"?
"acera" is the more common of the two: it sits at frequency rank #14,997 in our Spanish list, against #36,920 for "apena". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "acera" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "apena" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #95,370 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "acera" and "apena" also get mixed up with nearby pairs, the highest-scored neighbour is "apena vs apenado". 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 #95,370 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