Which to use
“arca” and “arm” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #12,304
- “arca” frequency rank
- #35,354
- “arm” frequency rank
- 47658
- confusion score
Side-by-Side Comparison
| Feature | arca | arm |
|---|---|---|
| Definition | Caja que puede tener distintos tamaños, generalmente de madera, cuya tapa se asegura con bisagras por uno de sus lados y que suele cerrarse con cerradura y candado. Suele estar muy ornamentada y a veces reposa sobre un pequeño podium. | Brazo. |
Where the eye mixes arca and arm
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Look-alike desk: arca vs arm
A purely visual mix-up. arca ([ˈaɾka]) and arm (/ɑːm/) 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 1 letter(s) in length. Our composite confusion score for this pair is 47658, derived from the frequency rank of both members and their visual similarity.
arca is recorded at frequency rank #12,304, classified as anoun, pronounced [ˈaɾka]. arm is at rank #35,354, tagged as anoun, pronounced /ɑːm/.
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 47658, this pair ranks #118,807 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of arca vs arm
Shared letters: ar. Private to "arca": c. Private to "arm": m.
"arca" · 4 letters · shape VCCV · "arm" · 3 letters · shape VCC
Known mistypes of this pair
- arca ← arac · arcca · arrca · raca
Frequently Asked Questions
Is swapping "arca" for "arm" ever safe?
In ordinary Spanish text, does "arca" or "arm" show up more?
After this comparison
Eye-level mix-up between "arca" and "arm" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "arca" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "arm" - compare definitions side by side with the headword page. Word entry
- This pair ranks #118,807 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "arca" and "arm" also get mixed up with nearby pairs, the highest-scored neighbour is "arm vs atl". 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 #118,807 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.