KaivskeyTell them apart

Quick tell: Kai is a name, key is an adjective, so they fill different roles in a sentence.

Which to use

“Kai” is a name and “key” is an adjective - they look or sound alike but fill different roles in a sentence.

#17,464
“Kai” frequency rank
#18,240
“key” frequency rank
35704
confusion score

Side-by-Side Comparison

Feature Kai key
Definition Prénom masculin. Dominant, principal.

Letter map: Kai vs key

Shared letters muted; letters that set Kai and key apart highlighted. Shared run: 1.

3 ch
Kai
3 ch
key

Part-of-speech tell for Kai / key

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Kai is aname and keyanadjective. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 35704, derived from the frequency rank of both members and their visual similarity.

Kai is recorded at frequency rank #17,464, classified as aname. key is at rank #18,240, tagged as anadj, pronounced \kiː\.

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 35704, this pair ranks #274,838 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Kai vs key

Shared letters: k. Private to "Kai": ai. Private to "key": ey.

"Kai" · 3 letters · shape CVV  ·  "key" · 3 letters · shape CVV

Frequently Asked Questions

Do "Kai" and "key" mean the same thing in a sentence?
No - they are not even the same part of speech. "Kai" is a name and "key" an adjective, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "Kai" vs "key" - which ranks higher?
"Kai" is the more common of the two: it sits at frequency rank #17,464 in our French list, against #18,240 for "key". 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 "Kai" and "key".

  • Full dictionary entry for "Kai" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "key" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #274,838 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "Kai" and "key" also get mixed up with nearby pairs, the highest-scored neighbour is "key vs ky". Nearby pair

Confusion rank #274,838 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list