kaivskenConfusable pair

Quick tell: kai is a noun, ken is a verb, so they fill different roles in a sentence.

Which to use

“kai” is a noun and “ken” is a verb - they look or sound alike but fill different roles in a sentence.

#10,070
“kai” frequency rank
#5,057
“ken” frequency rank
15127
confusion score

Side-by-Side Comparison

Feature kai ken
Definition Food. To give birth, conceive, beget, be born; to develop (as a fetus); to nourish, sustain (as life).

Where the eye mixes kai and ken

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

3 ch
kai
3 ch
ken

Why the eye confuses kai with ken

These two trip readers on the page rather than in the ear: kai is /kaɪ̯/ while ken is /kɛn/. 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 verb), which is usually the fastest check. Our composite confusion score for this pair is 15127, derived from the frequency rank of both members and their visual similarity.

kai is recorded at frequency rank #10,070, classified as anoun, pronounced /kaɪ̯/. ken is at rank #5,057, tagged as averb, pronounced /kɛn/.

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 15127, this pair ranks #465,893 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of kai vs ken

Shared letters: k. Private to "kai": ai. Private to "ken": en.

"kai" · 3 letters · shape CVV  ·  "ken" · 3 letters · shape CVC

Frequently Asked Questions

Is swapping "kai" for "ken" ever safe?
No - they are not even the same part of speech. "kai" is a noun and "ken" a verb, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "kai" or "ken" show up more?
"ken" is the more common of the two: it sits at frequency rank #5,057 in our English list, against #10,070 for "kai". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "kai" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ken" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #465,893 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "kai" and "ken" also get mixed up with nearby pairs, the highest-scored neighbour is "kai vs Kop". Nearby pair

Confusion rank #465,893 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