Which to use
“rasa” and “rust” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #23,795
- “rasa” frequency rank
- #46,045
- “rust” frequency rank
- 69840
- confusion score
Side-by-Side Comparison
| Feature | rasa | rust |
|---|---|---|
| Definition | instrumento de formato cilíndrico usado na medição de secos | ferrugem |
Where the eye mixes rasa and rust
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses rasa with rust
A purely visual mix-up. rasa (/ˈχa.zɐ/) and rust (/ɹʌst/) 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 69840, derived from the frequency rank of both members and their visual similarity.
rasa is recorded at frequency rank #23,795, classified as anoun, pronounced /ˈχa.zɐ/. rust is at rank #46,045, tagged as anoun, pronounced /ɹʌst/.
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 69840, this pair ranks #3,828 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.
Orthographic DNA of rasa vs rust
Shared letters: rs. Private to "rasa": a. Private to "rust": tu.
"rasa" · 4 letters · shape CVCV · "rust" · 4 letters · shape CVCC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "rasa" for "rust" ever safe?
Which is more common, "rasa" or "rust"?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "rasa" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "rust" - compare definitions side by side with the headword page. Word entry
- This pair ranks #3,828 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "rasa" and "rust" also get mixed up with nearby pairs, the highest-scored neighbour is "ruma vs rust". 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 #3,828 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.