Which to use
“Rad” is a noun and “RKI” is an abbrev - they look or sound alike but fill different roles in a sentence.
- #3,146
- “Rad” frequency rank
- #43,448
- “RKI” frequency rank
- 46594
- confusion score
Side-by-Side Comparison
| Feature | Rad | RKI |
|---|---|---|
| Definition | rundes Bauteil, das um seine Achse rotiert | Robert Koch-Institut |
Where the eye mixes Rad and RKI
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Why the eye confuses Rad with RKI
These two trip readers on the page rather than in the ear: Rad is [ʁaːt] while RKI is [ɛʁkaːˈʔiː]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs abbrev), which is usually the fastest check. Our composite confusion score for this pair is 46594, derived from the frequency rank of both members and their visual similarity.
Rad is recorded at frequency rank #3,146, classified as anoun, pronounced [ʁaːt]. RKI is at rank #43,448, tagged as anabbrev, pronounced [ɛʁkaːˈʔiː].
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 46594, this pair ranks #1,313,761 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of Rad vs RKI
Shared letters: r. Private to "Rad": ad. Private to "RKI": ik.
"Rad" · 3 letters · shape CVC · "RKI" · 3 letters · shape CCV
Frequently Asked Questions
Is swapping "Rad" for "RKI" ever safe?
In ordinary German text, does "Rad" or "RKI" show up more?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "Rad" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "RKI" - compare definitions side by side with the headword page. Word entry
- This pair ranks #1,313,761 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
- "Rad" and "RKI" also get mixed up with nearby pairs, the highest-scored neighbour is "RKI vs RUB". Nearby pair
Confusion rank #1,313,761 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.