cocksvscosTell them apart

Which to use

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

#15,780
“cocks” frequency rank
#6,553
“cos” frequency rank
22333
confusion score

Side-by-Side Comparison

Feature cocks cos
Definition plural of cock Synonym of romaine lettuce, a long-leaved variety of lettuce.

Where the eye mixes cocks and cos

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
cocks
3 ch
cos

Why the eye confuses cocks with cos

A purely visual mix-up. cocks (/kɒks/) and cos (/kɑs/) 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 2 letter(s) in length. Our composite confusion score for this pair is 22333, derived from the frequency rank of both members and their visual similarity.

cocks is recorded at frequency rank #15,780, classified as anoun, pronounced /kɒks/. cos is at rank #6,553, tagged as anoun, pronounced /kɑs/.

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 22333, this pair ranks #417,348 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of cocks vs cos

Shared letters: cos. Private to "cocks": k. Private to "cos": -.

"cocks" · 5 letters · shape CVCCC  ·  "cos" · 3 letters · shape CVC

Known mistypes of this pair

  • cocksccocks · ccoks · coccks · cockks · cockss · cocsk · cokcs · occks

Frequently Asked Questions

Can "cocks" and "cos" be used interchangeably?
No. They are said differently (/kɒks/ versus /kɑs/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "cocks" vs "cos" - which ranks higher?
"cos" is the more common of the two: it sits at frequency rank #6,553 in our English list, against #15,780 for "cocks". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "cocks" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "cos" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #417,348 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "cocks" and "cos" also get mixed up with nearby pairs, the highest-scored neighbour is "cocks vs coms". 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 #417,348 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