concentrarvsconcentraronTell them apart

Which to use

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

#17,381
“concentrar” frequency rank
#31,277
“concentraron” frequency rank
48658
confusion score

Side-by-Side Comparison

Feature concentrar concentraron
Definition Acumular en un mismo punto mucha cantidad de algo. Tercera persona del plural (ellos, ellas; ustedes, 2.ª persona) del pretérito perfecto simple de indicativo de concentrar o de concentrarse.

Where the eye mixes concentrar and concentraron

Muted = shared; highlighted = the visual trap. They share 10 letters in sequence. concentrar runs 10 letters (CVCCVCCCVC) against concentraron's 12 (CVCCVCCCVCVC) - the length gap alone is often enough to separate them once you know to check it.

10 ch
concentrar
12 ch
concentraron

Visual trap between concentrar and concentraron

A purely visual mix-up. concentrar ([kõnsẽn̪ˈt̪ɾaɾ]) and concentraron ([kõnsẽn̪ˈt̪ɾaɾõn]) 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 extra letter(s) - “concentrar” sits inside “concentraron”. Our composite confusion score for this pair is 48658, derived from the frequency rank of both members and their visual similarity.

concentrar is recorded at frequency rank #17,381, classified as averb, pronounced [kõnsẽn̪ˈt̪ɾaɾ]. concentraron is at rank #31,277, tagged as averb, pronounced [kõnsẽn̪ˈt̪ɾaɾõn].

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 48658, this pair ranks #113,217 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of concentrar vs concentraron

Shared letters: acenort. Private to "concentrar": -. Private to "concentraron": -.

"concentrar" · 10 letters · shape CVCCVCCCVC  ·  "concentraron" · 12 letters · shape CVCCVCCCVCVC

Known mistypes of this pair

  • concentrarcconcentrar · cnocentrar · cocnentrar · conccentrar · concenntrar · concenrtar · concentarr · concentrarr
  • concentraroncconcentraron · cnocentraron · cocnentraron · conccentraron · concenntraron · concenrtaron · concentarron · concentraorn

Frequently Asked Questions

Do "concentrar" and "concentraron" mean the same thing in a sentence?
No. They are said differently ([kõnsẽn̪ˈt̪ɾaɾ] versus [kõnsẽn̪ˈt̪ɾaɾõn]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "concentrar" vs "concentraron" - which ranks higher?
"concentrar" is the more common of the two: it sits at frequency rank #17,381 in our Spanish list, against #31,277 for "concentraron". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "concentrar" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "concentraron" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #113,217 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "concentrar" and "concentraron" also get mixed up with nearby pairs, the highest-scored neighbour is "concentrar vs concentre". 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 #113,217 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