keivsKenjiWhich spelling fits?

Quick tell: kei is a noun, Kenji is a name, so they fill different roles in a sentence.

Which to use

“kei” is a noun and “Kenji” is a name - they look or sound alike but fill different roles in a sentence.

#24,215
“kei” frequency rank
#36,212
“Kenji” frequency rank
60427
confusion score

Side-by-Side Comparison

Feature kei Kenji
Definition A class of lightweight vehicles with small engines. A male given name from Japanese.

Letter map: kei vs Kenji

Shared letters muted; letters that set kei and Kenji apart highlighted. Shared run: 3. kei runs 3 letters (CVV) against Kenji's 5 (CVCCV) - the length gap alone is often enough to separate them once you know to check it.

3 ch
kei
5 ch
Kenji

Part-of-speech tell for kei / Kenji

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: kei is anoun and Kenjianame. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 60427, derived from the frequency rank of both members and their visual similarity.

kei is recorded at frequency rank #24,215, classified as anoun. Kenji is at rank #36,212, tagged as aname.

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 60427, this pair ranks #100,272 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of kei vs Kenji

Shared letters: eik. Private to "kei": -. Private to "Kenji": jn.

"kei" · 3 letters · shape CVV  ·  "Kenji" · 5 letters · shape CVCCV

Known mistypes of this pair

  • Kenji ← eknji · kejni · kenij · kenjji · kennji · kkenji · kneji

Frequently Asked Questions

Can "kei" and "Kenji" be used interchangeably?
No - they are not even the same part of speech. "kei" is a noun and "Kenji" a name, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "kei" vs "Kenji" - which ranks higher?
"kei" is the more common of the two: it sits at frequency rank #24,215 in our English list, against #36,212 for "Kenji". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Done with this confusable. These links stay specific to "kei" and "Kenji".

  • Full dictionary entry for "kei" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Kenji" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #100,272 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "kei" and "Kenji" also get mixed up with nearby pairs, the highest-scored neighbour is "Kenji vs koji". 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 #100,272 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list