keyvsKyiTell them apart

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

Which to use

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

#788
“key” frequency rank
#42,736
“Kyi” frequency rank
43524
confusion score

Side-by-Side Comparison

Feature key Kyi
Definition An object designed to open and close a lock. A surname.

Letter map: key vs Kyi

Shared letters muted; letters that set key and Kyi apart highlighted. Shared run: 2.

3 ch
key
3 ch
Kyi

Part-of-speech tell for key / Kyi

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: key is anoun and Kyianame. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 43524, derived from the frequency rank of both members and their visual similarity.

key is recorded at frequency rank #788, classified as anoun, pronounced /kiː/. Kyi is at rank #42,736, 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 43524, this pair ranks #239,215 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of key vs Kyi

Shared letters: ky. Private to "key": e. Private to "Kyi": i.

"key" · 3 letters · shape CVV  ·  "Kyi" · 3 letters · shape CVV

Frequently Asked Questions

Is swapping "key" for "Kyi" ever safe?
No - they are not even the same part of speech. "key" is a noun and "Kyi" a name, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "key" vs "Kyi" - which ranks higher?
"key" is the more common of the two: it sits at frequency rank #788 in our English list, against #42,736 for "Kyi". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Done with this confusable. These links stay specific to "key" and "Kyi".

  • Full dictionary entry for "key" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Kyi" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #239,215 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "key" and "Kyi" also get mixed up with nearby pairs, the highest-scored neighbour is "Kop vs Kyi". Nearby pair

Confusion rank #239,215 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