kaovskeyWhat's the difference?

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

Which to use

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

#47,406
“kao” frequency rank
#18,240
“key” frequency rank
65646
confusion score

Side-by-Side Comparison

Feature kao key
Definition Champs Dominant, principal.

Letter map: kao vs key

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

3 ch
kao
3 ch
key

Role in the sentence - kao and key

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: kao is anoun and keyanadjective. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 65646, derived from the frequency rank of both members and their visual similarity.

kao is recorded at frequency rank #47,406, classified as anoun. 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 65646, this pair ranks #71,409 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of kao vs key

Shared letters: k. Private to "kao": ao. Private to "key": ey.

"kao" · 3 letters · shape CVV  ·  "key" · 3 letters · shape CVV

Frequently Asked Questions

Is swapping "kao" for "key" ever safe?
No - they are not even the same part of speech. "kao" is a noun and "key" an adjective, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "kao" vs "key" - which ranks higher?
"key" is the more common of the two: it sits at frequency rank #18,240 in our French list, against #47,406 for "kao". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

You've compared "kao" and "key". Here's where to go from here.

  • Full dictionary entry for "kao" 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 #71,409 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "kao" and "key" also get mixed up with nearby pairs, the highest-scored neighbour is "kao vs ky". Nearby pair

Confusion rank #71,409 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