caso vs class, What's the Difference?

Which to use

“caso” is a conjunction and “class” is a noun - they look or sound alike but fill different roles in a sentence.

#181
“caso” frequency rank: #10,854
“class” frequency rank: 11035
confusion score

Side-by-Side Comparison

Feature	caso	class
Definition	na hipótese de; se	(Informática) classe

Letter map: caso vs class

Shared letters muted; letters that set caso and class apart highlighted. Shared run: 3.

4 ch

caso

5 ch

class

Grammar separator: caso vs class

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: caso is aconjunction and classanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 11035, derived from the frequency rank of both members and their visual similarity.

caso is recorded at frequency rank #181, classified as aconj, pronounced /ˈka.zu/. class is at rank #10,854, tagged as anoun.

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 11035, this pair ranks #61,917 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of caso vs class

Shared letters: acs. Private to "caso": o. Private to "class": l.

"caso" · 4 letters · shape CVCV · "class" · 5 letters · shape CCVCC

Known mistypes of this pair

caso ← acso · casso · ccaso · csao
class ← calss · cclass · clas · cllass · clsas · lcass

Frequently Asked Questions

Is swapping "caso" for "class" ever safe?

No - they are not even the same part of speech. "caso" is a conjunction and "class" a noun, so a sentence built for one is usually ungrammatical with the other.

In ordinary Portuguese text, does "caso" or "class" show up more?

"caso" is the more common of the two: it sits at frequency rank #181 in our Portuguese list, against #10,854 for "class". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Done with this confusable. These links stay specific to "caso" and "class".

Full dictionary entry for "caso" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "class" - compare definitions side by side with the headword page. Word entry
This pair ranks #61,917 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"caso" and "class" also get mixed up with nearby pairs, the highest-scored neighbour is "chess vs class". 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 #61,917 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.