keys vs Kos, What's the Difference?

Which to use

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

#3,699
“keys” frequency rank: #27,534
“Kos” frequency rank: 31233
confusion score

Side-by-Side Comparison

Feature	keys	Kos
Definition	plural of key	An island of the Dodecanese, Greece.

Letter map: keys vs Kos

Shared letters muted; letters that set keys and Kos apart highlighted. Shared run: 2.

4 ch

keys

3 ch

Kos

Role in the sentence - keys and Kos

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: keys is anoun and Kosaname. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 31233, derived from the frequency rank of both members and their visual similarity.

keys is recorded at frequency rank #3,699, classified as anoun, pronounced /kiːz/. Kos is at rank #27,534, 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 31233, this pair ranks #347,887 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of keys vs Kos

Shared letters: ks. Private to "keys": ey. Private to "Kos": o.

"keys" · 4 letters · shape CVVC · "Kos" · 3 letters · shape CVC

Known mistypes of this pair

keys ← ekys · kesy · keyss · keyys · kkeys · kyes

Frequently Asked Questions

Is swapping "keys" for "Kos" ever safe?

No - they are not even the same part of speech. "keys" is a noun and "Kos" a name, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "keys" or "Kos"?

"keys" is the more common of the two: it sits at frequency rank #3,699 in our English list, against #27,534 for "Kos". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Done with this confusable. These links stay specific to "keys" and "Kos".

Full dictionary entry for "keys" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "Kos" - compare definitions side by side with the headword page. Word entry
This pair ranks #347,887 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"keys" and "Kos" also get mixed up with nearby pairs, the highest-scored neighbour is "Kop vs Kos". Nearby pair
Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #347,887 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.