Which to use
“coisa” is a noun and “copta” is an adjective - they look or sound alike but fill different roles in a sentence.
- #105
- “coisa” frequency rank
- #45,269
- “copta” frequency rank
- 45374
- confusion score
Side-by-Side Comparison
| Feature | coisa | copta |
|---|---|---|
| Definition | qualquer objeto inanimado; em sentido filosófico, coisa é tudo aquilo subsistente por si mesmo; a filosofia kantiana afirma ser uma coisa aquilo que existe independentemente do espírito; no sentido usual, como para o Direito, coisa é tudo aquilo que, percebido pelos sentidos, pode apresentar utilidade para o homem, caso em que se chama bem material | relacionado aos coptos |
Where the eye mixes coisa and copta
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. coisa (CVVCV) and copta (CVCCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Why the eye confuses coisa with copta
These two trip readers on the page rather than in the ear: coisa is [ˈkojzɐ] while copta is /ˈkɔp.tɐ/. 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 adjective), which is usually the fastest check. Our composite confusion score for this pair is 45374, derived from the frequency rank of both members and their visual similarity.
coisa is recorded at frequency rank #105, classified as anoun, pronounced [ˈkojzɐ]. copta is at rank #45,269, tagged as anadj, pronounced /ˈkɔp.tɐ/.
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 45374, this pair ranks #20,028 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of coisa vs copta
Shared letters: aco. Private to "coisa": is. Private to "copta": pt.
"coisa" · 5 letters · shape CVVCV · "copta" · 5 letters · shape CVCCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "coisa" for "copta" ever safe?
In ordinary Portuguese text, does "coisa" or "copta" 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 "coisa" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "copta" - compare definitions side by side with the headword page. Word entry
- This pair ranks #20,028 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "coisa" and "copta" also get mixed up with nearby pairs, the highest-scored neighbour is "conca vs copta". 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 #20,028 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.