coisa vs CSA, What's the Difference?

Which to use

“coisa” is a noun and “CSA” is an abbrev - they look or sound alike but fill different roles in a sentence.

#105
“coisa” frequency rank: #21,705
“CSA” frequency rank: 21810
confusion score

Side-by-Side Comparison

Feature	coisa	CSA
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	sigla de Canadian Space Agency, a Agência Espacial Canadense

Letter map: coisa vs CSA

Shared letters muted; letters that set coisa and CSA apart highlighted. Shared run: 3.

5 ch

coisa

3 ch

CSA

Grammar separator: coisa vs CSA

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: coisa is anoun and CSAanabbrev. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 21810, derived from the frequency rank of both members and their visual similarity.

coisa is recorded at frequency rank #105, classified as anoun, pronounced [ˈkojzɐ]. CSA is at rank #21,705, tagged as anabbrev.

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 21810, this pair ranks #48,367 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of coisa vs CSA

Shared letters: acs. Private to "coisa": io. Private to "CSA": -.

"coisa" · 5 letters · shape CVVCV · "CSA" · 3 letters · shape CCV

Known mistypes of this pair

coisa ← ccoisa · ciosa · coias · coissa · cosia · ocisa

Frequently Asked Questions

Can "coisa" and "CSA" be used interchangeably?

No - they are not even the same part of speech. "coisa" is a noun and "CSA" an abbrev, so a sentence built for one is usually ungrammatical with the other.

Frequency check: "coisa" vs "CSA" - which ranks higher?

"coisa" is the more common of the two: it sits at frequency rank #105 in our Portuguese list, against #21,705 for "CSA". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

You've compared "coisa" and "CSA". Here's where to go from here.

Full dictionary entry for "coisa" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "CSA" - compare definitions side by side with the headword page. Word entry
This pair ranks #48,367 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"coisa" and "CSA" also get mixed up with nearby pairs, the highest-scored neighbour is "chau vs CSA". 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 #48,367 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.