kat vs key, What's the Difference?

Which to use

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

#12,262
“kat” frequency rank: #788
“key” frequency rank: 13050
confusion score

Side-by-Side Comparison

Feature	kat	key
Definition	An ancient Egyptian unit of weight, one fiftieth of an avoirdupois pound.	An object designed to open and close a lock.

Letter map: kat vs key

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

3 ch

kat

3 ch

key

Spelling & dictionary notes on kat vs key

kat and key are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 13050, derived from the frequency rank of both members and their visual similarity.

kat is recorded at frequency rank #12,262, classified as anoun. 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 13050, this pair ranks #478,049 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of kat vs key

Shared letters: k. Private to "kat": at. Private to "key": ey.

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

Frequently Asked Questions

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

No. They share most of their letters but differ in 2 positions, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.

Frequency check: "kat" vs "key" - which ranks higher?

"key" is the more common of the two: it sits at frequency rank #788 in our English list, against #12,262 for "kat". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

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

Full dictionary entry for "kat" 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 #478,049 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"kat" and "key" also get mixed up with nearby pairs, the highest-scored neighbour is "kat vs Kop". Nearby pair

Confusion rank #478,049 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.