kaivskeyTell them apart

Which to use

“kai” and “key” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#15,404
“kai” frequency rank
#18,292
“key” frequency rank
33696
confusion score

Side-by-Side Comparison

Feature kai key
Definition Puerto [de mar] Llave.

Where the eye mixes kai and key

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
kai
3 ch
key

Visual trap between kai and key

A purely visual mix-up. kai (/kaj/) and key ([kiː]) 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 33696, derived from the frequency rank of both members and their visual similarity.

kai is recorded at frequency rank #15,404, classified as anoun, pronounced /kaj/. key is at rank #18,292, tagged as anoun, 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 33696, this pair ranks #195,394 of 323,831 scored Spanish 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 said differently (/kaj/ versus [kiː]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "kai" vs "key" - which ranks higher?
"kai" is the more common of the two: it sits at frequency rank #15,404 in our Spanish list, against #18,292 for "key". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • 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 #195,394 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "kai" and "key" also get mixed up with nearby pairs, the highest-scored neighbour is "kai vs Kano". Nearby pair

Confusion rank #195,394 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list