Which to use
“Alster” is a name and “Auster” is a noun - they look or sound alike but fill different roles in a sentence.
- #32,403
- “Alster” frequency rank
- #49,499
- “Auster” frequency rank
- 81902
- confusion score
Side-by-Side Comparison
| Feature | Alster | Auster |
|---|---|---|
| Definition | rechter Nebenfluss der Unterelbe | Muschel, deren Inneres zum Verzehr geeignet ist und als Delikatesse gilt |
Where the eye mixes Alster and Auster
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.
Why the eye confuses Alster with Auster
These two trip readers on the page rather than in the ear: Alster is [ˈalstɐ] while Auster is [ˈaʊ̯stɐ]. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - l in “Alster” becomes u in “Auster”, and the parts of speech differ too (name vs noun), which is usually the fastest check. Our composite confusion score for this pair is 81902, derived from the frequency rank of both members and their visual similarity.
Alster is recorded at frequency rank #32,403, classified as aname, pronounced [ˈalstɐ]. Auster is at rank #49,499, tagged as anoun, pronounced [ˈaʊ̯stɐ].
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 81902, this pair ranks #166,971 of 2,006,359 scored German confusable pairs - among the most confusable pairs.
Orthographic DNA of Alster vs Auster
Shared letters: aerst. Private to "Alster": l. Private to "Auster": u.
"Alster" · 6 letters · shape VCCCVC · "Auster" · 6 letters · shape VVCCVC
Known mistypes of this pair
Frequently Asked Questions
Can "Alster" and "Auster" be used interchangeably?
Frequency check: "Alster" vs "Auster" - which ranks higher?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "Alster" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "Auster" - compare definitions side by side with the headword page. Word entry
- This pair ranks #166,971 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
- "Alster" and "Auster" also get mixed up with nearby pairs, the highest-scored neighbour is "answer vs Auster". 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 #166,971 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.