Which to use
“Ardua” is a name and “arruga” is a noun - they look or sound alike but fill different roles in a sentence.
- #25,143
- “Ardua” frequency rank
- #34,888
- “arruga” frequency rank
- 60031
- confusion score
Side-by-Side Comparison
| Feature | Ardua | arruga |
|---|---|---|
| Definition | Apellido. | Pliegue (parte que se dobla) o raya de la piel, que puede resultar de distintos factores, pero generalmente por la edad. |
Where the eye mixes Ardua and arruga
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. Ardua runs 5 letters (VCCVV) against arruga's 6 (VCCVCV) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses Ardua with arruga
These two trip readers on the page rather than in the ear: Ardua is [ˈaɾð̞wa] while arruga is [aˈruɣ̞a]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (name vs noun), which is usually the fastest check. Our composite confusion score for this pair is 60031, derived from the frequency rank of both members and their visual similarity.
Ardua is recorded at frequency rank #25,143, classified as aname, pronounced [ˈaɾð̞wa]. arruga is at rank #34,888, tagged as anoun, pronounced [aˈruɣ̞a].
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 60031, this pair ranks #60,394 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of Ardua vs arruga
Shared letters: aru. Private to "Ardua": d. Private to "arruga": g.
"Ardua" · 5 letters · shape VCCVV · "arruga" · 6 letters · shape VCCVCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "Ardua" for "arruga" ever safe?
Which is more common, "Ardua" or "arruga"?
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 "Ardua" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "arruga" - compare definitions side by side with the headword page. Word entry
- This pair ranks #60,394 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "Ardua" and "arruga" also get mixed up with nearby pairs, the highest-scored neighbour is "arruga vs arrugado". 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 #60,394 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.