classvsopenConfusable pair

Quick tell: class is a noun, open is an adjective, so they fill different roles in a sentence.

Which to use

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

#11,026
“class” frequency rank
#2,607
“open” frequency rank
13633
confusion score

Side-by-Side Comparison

Feature class open
Definition Klasse etwas ist nicht geschlossen

Letter map: class vs open

Shared letters muted; letters that set class and open apart highlighted. No shared letter run. class runs 5 letters (CCVCC) against open's 4 (VCVC) - the length gap alone is often enough to separate them once you know to check it.

5 ch
class
4 ch
open

Part-of-speech tell for class / open

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: class is anoun and openanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 13633, derived from the frequency rank of both members and their visual similarity.

class is recorded at frequency rank #11,026, classified as anoun, pronounced […]. open is at rank #2,607, tagged as anadj, pronounced […].

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 13633, this pair ranks #1,956,735 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of class vs open

Shared letters: none. Private to "class": acls. Private to "open": enop.

"class" · 5 letters · shape CCVCC  ·  "open" · 4 letters · shape VCVC

Known mistypes of this pair

  • class ← calss · cclass · clas · claß · cllass · clsas · lcass
  • open ← oepn · openn · opne · oppen · poen

Frequently Asked Questions

Do "class" and "open" mean the same thing in a sentence?
No - they are not even the same part of speech. "class" is a noun and "open" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary German text, does "class" or "open" show up more?
"open" is the more common of the two: it sits at frequency rank #2,607 in our German list, against #11,026 for "class". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pair "class" vs "open" is on the table, pick a follow-up below.

  • Full dictionary entry for "class" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "open" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,956,735 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "class" and "open" also get mixed up with nearby pairs, the highest-scored neighbour is "class vs puzzles". 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 #1,956,735 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list