Which to use
“Cairo” is a noun and “cuatro” is a num - they look or sound alike but fill different roles in a sentence.
- #9,303
- “Cairo” frequency rank
- #41,423
- “cuatro” frequency rank
- 50726
- confusion score
Side-by-Side Comparison
| Feature | Cairo | cuatro |
|---|---|---|
| Definition | capital do Egito, país no qual é a maior cidade, posto que também ocupa no chamado mundo árabe | quatro |
Where the eye mixes Cairo and cuatro
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. Cairo runs 5 letters (CVVCV) against cuatro's 6 (CVVCCV) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses Cairo with cuatro
These two trip readers on the page rather than in the ear: Cairo is /ˈkaj.ɾu/ while cuatro is /ˈkŭarto/. 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 (noun vs num), which is usually the fastest check. Our composite confusion score for this pair is 50726, derived from the frequency rank of both members and their visual similarity.
Cairo is recorded at frequency rank #9,303, classified as anoun, pronounced /ˈkaj.ɾu/. cuatro is at rank #41,423, tagged as anum, pronounced /ˈkŭarto/.
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 50726, this pair ranks #14,239 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.
Orthographic DNA of Cairo vs cuatro
Shared letters: acor. Private to "Cairo": i. Private to "cuatro": tu.
"Cairo" · 5 letters · shape CVVCV · "cuatro" · 6 letters · shape CVVCCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "Cairo" for "cuatro" ever safe?
In ordinary Portuguese text, does "Cairo" or "cuatro" show up more?
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 "Cairo" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "cuatro" - compare definitions side by side with the headword page. Word entry
- This pair ranks #14,239 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "Cairo" and "cuatro" also get mixed up with nearby pairs, the highest-scored neighbour is "cuando vs cuatro". 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 #14,239 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.