co vs cox, What's the Difference?

Which to use

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

#617
“co” frequency rank: #7,783
“cox” frequency rank: 8400
confusion score

Side-by-Side Comparison

Feature	co	cox
Definition	Clipping of company.	A coxswain of a boat, especially of a racing crew.

Where the eye mixes co and cox

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

2 ch

3 ch

cox

Why the eye confuses co with cox

A purely visual mix-up. co (/kəʊ/) and cox (/kɒks/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 extra letter(s) - “co” sits inside “cox”. Our composite confusion score for this pair is 8400, derived from the frequency rank of both members and their visual similarity.

co is recorded at frequency rank #617, classified as anoun, pronounced /kəʊ/. cox is at rank #7,783, tagged as anoun, pronounced /kɒks/.

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 8400, this pair ranks #502,683 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of co vs cox

Shared letters: co. Private to "co": -. Private to "cox": x.

"co" · 2 letters · shape CV · "cox" · 3 letters · shape CVC

Frequently Asked Questions

Can "co" and "cox" be used interchangeably?

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

Which is more common, "co" or "cox"?

"co" is the more common of the two: it sits at frequency rank #617 in our English list, against #7,783 for "cox". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

Full dictionary entry for "co" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "cox" - compare definitions side by side with the headword page. Word entry
This pair ranks #502,683 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"co" and "cox" also get mixed up with nearby pairs, the highest-scored neighbour is "CGT vs cox". Nearby pair

Confusion rank #502,683 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.