ArcosvsArrasTell them apart

Which to use

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

#9,762
“Arcos” frequency rank
#47,564
“Arras” frequency rank
57326
confusion score

Side-by-Side Comparison

Feature Arcos Arras
Definition Apellido Apellido.

Where the eye mixes Arcos and Arras

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

5 ch
Arcos
5 ch
Arras

Visual trap between Arcos and Arras

A purely visual mix-up. Arcos ([ˈaɾkos]) and Arras ([ˈaras]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 57326, derived from the frequency rank of both members and their visual similarity.

Arcos is recorded at frequency rank #9,762, classified as aname, pronounced [ˈaɾkos]. Arras is at rank #47,564, tagged as aname, pronounced [ˈaras].

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 57326, this pair ranks #70,934 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of Arcos vs Arras

Shared letters: ars. Private to "Arcos": co. Private to "Arras": -.

"Arcos" · 5 letters · shape VCCVC  ·  "Arras" · 5 letters · shape VCCVC

Known mistypes of this pair

  • Arcos ← arccos · arcoss · arcso · arocs · arrcos · racos
  • Arras ← arars · arrass · arrsa

Frequently Asked Questions

Can "Arcos" and "Arras" be used interchangeably?
No. They are said differently ([ˈaɾkos] versus [ˈaras]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "Arcos" or "Arras"?
"Arcos" is the more common of the two: it sits at frequency rank #9,762 in our Spanish list, against #47,564 for "Arras". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

  • Full dictionary entry for "Arcos" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Arras" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #70,934 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "Arcos" and "Arras" also get mixed up with nearby pairs, the highest-scored neighbour is "amarras vs Arras". 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 #70,934 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