extensionvsflyingWhich spelling fits?

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

Which to use

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

#33,032
“extension” frequency rank
#23,936
“flying” frequency rank
56968
confusion score

Side-by-Side Comparison

Feature extension flying
Definition Ausdehnung, Erweiterung, Umfang Partizip Präsens (present participle) des Verbs fly

Letter map: extension vs flying

Shared letters muted; letters that set extension and flying apart highlighted. Shared run: 2. extension runs 9 letters (VCCVCCVVC) against flying's 6 (CCVVCC) - the length gap alone is often enough to separate them once you know to check it.

9 ch
extension
6 ch
flying

Part-of-speech tell for extension / flying

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: extension is anoun and flyingaverb. On the page they differ by 3 letter(s) in length. Our composite confusion score for this pair is 56968, derived from the frequency rank of both members and their visual similarity.

extension is recorded at frequency rank #33,032, classified as anoun, pronounced […]. flying is at rank #23,936, tagged as averb, 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 56968, this pair ranks #919,744 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of extension vs flying

Shared letters: in. Private to "extension": eostx. Private to "flying": fgly.

"extension" · 9 letters · shape VCCVCCVVC  ·  "flying" · 6 letters · shape CCVVCC

Known mistypes of this pair

  • extensionetxension · exetnsion · extenison · extennsion · extensino · extensionn · extensoin · extenssion
  • flyingfflying · fliyng · fllying · flyign · flyingg · flyinng · flynig · flyying

Frequently Asked Questions

Do "extension" and "flying" mean the same thing in a sentence?
No - they are not even the same part of speech. "extension" is a noun and "flying" a verb, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "extension" vs "flying" - which ranks higher?
"flying" is the more common of the two: it sits at frequency rank #23,936 in our German list, against #33,032 for "extension". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pair "extension" vs "flying" is on the table, pick a follow-up below.

  • Full dictionary entry for "extension" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "flying" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #919,744 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "extension" and "flying" also get mixed up with nearby pairs, the highest-scored neighbour is "extension 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 #919,744 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