Which to use
“Koch” is a name and “koi” is an adjective - they look or sound alike but fill different roles in a sentence.
- #26,777
- “Koch” frequency rank
- #29,838
- “koi” frequency rank
- 56615
- confusion score
Side-by-Side Comparison
| Feature | Koch | koi |
|---|---|---|
| Definition | Nom de famille. | Autre orthographe de koï (race de carpe du Japon, aussi appelée carpe japonaise). |
Where the eye mixes Koch and koi
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. Koch runs 4 letters (CVCC) against koi's 3 (CVV) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between Koch and koi
These two trip readers on the page rather than in the ear: Koch is \kɔk\ while koi is \kɔj\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (name vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 56615, derived from the frequency rank of both members and their visual similarity.
Koch is recorded at frequency rank #26,777, classified as aname, pronounced \kɔk\. koi is at rank #29,838, tagged as anadj, pronounced \kɔj\.
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 56615, this pair ranks #119,979 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of Koch vs koi
Shared letters: ko. Private to "Koch": ch. Private to "koi": i.
"Koch" · 4 letters · shape CVCC · "koi" · 3 letters · shape CVV
Known mistypes of this pair
- Koch ← kcoh · kkoch · kocch · kochh · kohc · okch
Frequently Asked Questions
Do "Koch" and "koi" mean the same thing in a sentence?
Which is more common, "Koch" or "koi"?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "Koch" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "koi" - compare definitions side by side with the headword page. Word entry
- This pair ranks #119,979 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "Koch" and "koi" also get mixed up with nearby pairs, the highest-scored neighbour is "koi vs ky". 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 #119,979 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.