Which to use
“arab” is an adjective and “arco” is a noun - they look or sound alike but fill different roles in a sentence.
- #34,137
- “arab” frequency rank
- #4,287
- “arco” frequency rank
- 38424
- confusion score
Side-by-Side Comparison
| Feature | arab | arco |
|---|---|---|
| Definition | árabe, arábico | ente geométrico cuja principal característica é a curva |
Where the eye mixes arab and arco
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Visual trap between arab and arco
These two trip readers on the page rather than in the ear: arab is /ˈɑː.ʁap/ while arco is /ˈaɾ.ku/. 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 (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 38424, derived from the frequency rank of both members and their visual similarity.
arab is recorded at frequency rank #34,137, classified as anadj, pronounced /ˈɑː.ʁap/. arco is at rank #4,287, tagged as anoun, pronounced /ˈaɾ.ku/.
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 38424, this pair ranks #28,035 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of arab vs arco
Shared letters: ar. Private to "arab": b. Private to "arco": co.
"arab" · 4 letters · shape VCVC · "arco" · 4 letters · shape VCCV
Known mistypes of this pair
Frequently Asked Questions
Can "arab" and "arco" be used interchangeably?
Which is more common, "arab" or "arco"?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "arab" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "arco" - compare definitions side by side with the headword page. Word entry
- This pair ranks #28,035 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "arab" and "arco" also get mixed up with nearby pairs, the highest-scored neighbour is "arab vs atar". 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 #28,035 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.