AOvsAOKWhat's the difference?

Which to use

“AO” and “AOK” are a confusable German pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#13,309
“AO” frequency rank
#16,910
“AOK” frequency rank
30219
confusion score

Side-by-Side Comparison

Feature AO AOK
Definition Abgabenordnung Allgemeine Ortskrankenkasse in Deutschland

Where the eye mixes AO and AOK

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

2 ch
AO
3 ch
AOK

Look-alike desk: AO vs AOK

A purely visual mix-up. AO ([aːˈʔoː]) and AOK ([aːʔoːˈkaː]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 extra letter(s) - “AO” sits inside “AOK”. Our composite confusion score for this pair is 30219, derived from the frequency rank of both members and their visual similarity.

AO is recorded at frequency rank #13,309, classified as anabbrev, pronounced [aːˈʔoː]. AOK is at rank #16,910, tagged as anabbrev, pronounced [aːʔoːˈkaː].

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 30219, this pair ranks #1,752,119 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of AO vs AOK

Shared letters: ao. Private to "AO": -. Private to "AOK": k.

"AO" · 2 letters · shape VV  ·  "AOK" · 3 letters · shape VVC

Frequently Asked Questions

Can "AO" and "AOK" be used interchangeably?
No. They are said differently ([aːˈʔoː] versus [aːʔoːˈkaː]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "AO" vs "AOK" - which ranks higher?
"AO" is the more common of the two: it sits at frequency rank #13,309 in our German list, against #16,910 for "AOK". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "AO" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "AOK" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,752,119 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "AO" and "AOK" also get mixed up with nearby pairs, the highest-scored neighbour is "AOK vs AUD". Nearby pair

Confusion rank #1,752,119 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