Which to use
“Castor” and “custom” are a confusable German pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #33,509
- “Castor” frequency rank
- #24,286
- “custom” frequency rank
- 57795
- confusion score
Side-by-Side Comparison
| Feature | Castor | custom |
|---|---|---|
| Definition | ein Spezialgefäß für den Transport und die Lagerung von radioaktivem Material | das althergebrachte und übliche Tun oder Verhalten |
Where the eye mixes Castor and custom
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Look-alike desk: Castor vs custom
A purely visual mix-up. Castor ([ˈkastoːɐ̯]) and custom ([ˈkʌstəm]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 57795, derived from the frequency rank of both members and their visual similarity.
Castor is recorded at frequency rank #33,509, classified as anoun, pronounced [ˈkastoːɐ̯]. custom is at rank #24,286, tagged as anoun, pronounced [ˈkʌstəm].
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 57795, this pair ranks #887,489 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of Castor vs custom
Shared letters: cost. Private to "Castor": ar. Private to "custom": mu.
"Castor" · 6 letters · shape CVCCVC · "custom" · 6 letters · shape CVCCVC
Known mistypes of this pair
Frequently Asked Questions
Do "Castor" and "custom" mean the same thing in a sentence?
Which is more common, "Castor" or "custom"?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "Castor" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "custom" - compare definitions side by side with the headword page. Word entry
- This pair ranks #887,489 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
- "Castor" and "custom" also get mixed up with nearby pairs, the highest-scored neighbour is "Canton vs Castor". 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 #887,489 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.