AltarvsAltbauTell them apart

Which to use

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

#8,164
“Altar” frequency rank
#21,516
“Altbau” frequency rank
29680
confusion score

Side-by-Side Comparison

Feature Altar Altbau
Definition tischähnliche Einrichtung (zum Beispiel in einer Kirche) zur Feier eines Gottesdienstes, zur kultischen Verehrung oder für das Abhalten von Ritualen älteres Gebäude, welches noch vor einem bestimmten Zeitpunkt — in der Regel noch vor dem Zweiten Weltkrieg — fertiggestellt worden ist

Where the eye mixes Altar and Altbau

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. Altar runs 5 letters (VCCVC) against Altbau's 6 (VCCCVV) - the length gap alone is often enough to separate them once you know to check it.

5 ch
Altar
6 ch
Altbau

Why the eye confuses Altar with Altbau

A purely visual mix-up. Altar ([alˈtaːɐ̯]) and Altbau ([ˈaltˌbaʊ̯]) 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 letter(s) in length. Our composite confusion score for this pair is 29680, derived from the frequency rank of both members and their visual similarity.

Altar is recorded at frequency rank #8,164, classified as anoun, pronounced [alˈtaːɐ̯]. Altbau is at rank #21,516, tagged as anoun, pronounced [ˈaltˌbaʊ̯].

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 29680, this pair ranks #1,762,283 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of Altar vs Altbau

Shared letters: alt. Private to "Altar": r. Private to "Altbau": bu.

"Altar" · 5 letters · shape VCCVC  ·  "Altbau" · 6 letters · shape VCCCVV

Known mistypes of this pair

  • Altar ← alatr · alltar · altarr · altra · alttar · atlar · latar
  • Altbau ← albtau · alltbau · altabu · altbbau · altbua · alttbau · atlbau · latbau

Frequently Asked Questions

Can "Altar" and "Altbau" be used interchangeably?
No. They are said differently ([alˈtaːɐ̯] versus [ˈaltˌbaʊ̯]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary German text, does "Altar" or "Altbau" show up more?
"Altar" is the more common of the two: it sits at frequency rank #8,164 in our German list, against #21,516 for "Altbau". 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 "Altar" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Altbau" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,762,283 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "Altar" and "Altbau" also get mixed up with nearby pairs, the highest-scored neighbour is "Altach vs Altar". 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 #1,762,283 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