Which to use
“concha” is a noun and “contra” is a preposition - they look or sound alike but fill different roles in a sentence.
- #15,285
- “concha” frequency rank
- #160
- “contra” frequency rank
- 15445
- confusion score
Side-by-Side Comparison
| Feature | concha | contra |
|---|---|---|
| Definition | invólucro calcário ou córneo de certos animais | em oposição a |
Where the eye mixes concha and contra
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Visual trap between concha and contra
These two trip readers on the page rather than in the ear: concha is /ˈkõ.ʃɐ/ while contra is /ˈkõ.tɾɐ/. 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 (noun vs preposition), which is usually the fastest check. Our composite confusion score for this pair is 15445, derived from the frequency rank of both members and their visual similarity.
concha is recorded at frequency rank #15,285, classified as anoun, pronounced /ˈkõ.ʃɐ/. contra is at rank #160, tagged as aprep, pronounced /ˈkõ.tɾɐ/.
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 15445, this pair ranks #56,368 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of concha vs contra
Shared letters: acno. Private to "concha": h. Private to "contra": rt.
"concha" · 6 letters · shape CVCCCV · "contra" · 6 letters · shape CVCCCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "concha" for "contra" ever safe?
Which is more common, "concha" or "contra"?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "concha" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "contra" - compare definitions side by side with the headword page. Word entry
- This pair ranks #56,368 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "concha" and "contra" also get mixed up with nearby pairs, the highest-scored neighbour is "conca vs concha". 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 #56,368 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.