case vs class, What's the Difference?

Which to use

“case” and “class” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#6,149
“case” frequency rank: #10,854
“class” frequency rank: 17003
confusion score

Side-by-Side Comparison

Feature	case	class
Definition	caso	(Informática) classe

Letter map: case vs class

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

4 ch

case

5 ch

class

Pair insight - case / class

case and class are indexed as a confusable Portuguese pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 17003, derived from the frequency rank of both members and their visual similarity.

case is recorded at frequency rank #6,149, classified as anoun, pronounced /keɪs/. 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 17003, this pair ranks #54,358 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of case vs class

Shared letters: acs. Private to "case": e. Private to "class": l.

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

Known mistypes of this pair

case ← acse · caes · casse · ccase · csae
class ← calss · cclass · clas · cllass · clsas · lcass

Frequently Asked Questions

Can "case" and "class" be used interchangeably?

No. They differ by 1 letter(s) in length, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.

Frequency check: "case" vs "class" - which ranks higher?

"case" is the more common of the two: it sits at frequency rank #6,149 in our Portuguese list, against #10,854 for "class". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

You've compared "case" and "class". Here's where to go from here.

Full dictionary entry for "case" 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 #54,358 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"case" 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 #54,358 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.