kan vs key, What's the Difference?

Which to use

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

#17,879
“kan” frequency rank: #788
“key” frequency rank: 18667
confusion score

Side-by-Side Comparison

Feature	kan	key
Definition	Archaic form of khan.	An object designed to open and close a lock.

Where the eye mixes kan and key

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

3 ch

kan

3 ch

key

Why the eye confuses kan with key

A purely visual mix-up. kan (/kɑːn/) 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 18667, derived from the frequency rank of both members and their visual similarity.

kan is recorded at frequency rank #17,879, classified as anoun, pronounced /kɑːn/. key is at rank #788, 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 18667, this pair ranks #443,326 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of kan vs key

Shared letters: k. Private to "kan": an. Private to "key": ey.

"kan" · 3 letters · shape CVC · "key" · 3 letters · shape CVV

Frequently Asked Questions

Is swapping "kan" for "key" ever safe?

No. They are said differently (/kɑːn/ versus /kiː/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.

In ordinary English text, does "kan" or "key" show up more?

"key" is the more common of the two: it sits at frequency rank #788 in our English list, against #17,879 for "kan". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

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

Full dictionary entry for "kan" 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 #443,326 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"kan" and "key" also get mixed up with nearby pairs, the highest-scored neighbour is "kan vs Kop". Nearby pair

Confusion rank #443,326 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.