extensionvsKölleWhich spelling fits?

Quick tell: extension is a noun, Kölle is a name, so they fill different roles in a sentence.

Which to use

“extension” is a noun and “Kölle” is a name - they look or sound alike but fill different roles in a sentence.

#33,032
“extension” frequency rank
#49,855
“Kölle” frequency rank
82887
confusion score

Side-by-Side Comparison

Feature extension Kölle
Definition Ausdehnung, Erweiterung, Umfang deutscher Nachname, Familienname

Letter map: extension vs Kölle

Shared letters muted; letters that set extension and Kölle apart highlighted. Shared run: 1.

9 ch
extension
5 ch
Kölle

Grammar separator: extension vs Kölle

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: extension is anoun and Kölleaname. On the page they differ by 4 letter(s) in length. Our composite confusion score for this pair is 82887, derived from the frequency rank of both members and their visual similarity.

extension is recorded at frequency rank #33,032, classified as anoun, pronounced […]. Kölle is at rank #49,855, tagged as aname, 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 82887, this pair ranks #149,258 of 2,006,359 scored German confusable pairs - among the most confusable pairs.

Orthographic DNA of extension vs Kölle

Shared letters: e. Private to "extension": inostx. Private to "Kölle": klö.

"extension" · 9 letters · shape VCCVCCVVC  ·  "Kölle" · 5 letters · shape CVCCV

Known mistypes of this pair

  • extensionetxension · exetnsion · extenison · extennsion · extensino · extensionn · extensoin · extenssion

Frequently Asked Questions

Can "extension" and "Kölle" be used interchangeably?
No - they are not even the same part of speech. "extension" is a noun and "Kölle" a name, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "extension" vs "Kölle" - which ranks higher?
"extension" is the more common of the two: it sits at frequency rank #33,032 in our German list, against #49,855 for "Kölle". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

You've compared "extension" and "Kölle". Here's where to go from here.

  • Full dictionary entry for "extension" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Kölle" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #149,258 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "extension" and "Kölle" also get mixed up with nearby pairs, the highest-scored neighbour is "Kölle 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 #149,258 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