Which to use
“cocaine” and “codeine” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #7,321
- “cocaine” frequency rank
- #33,580
- “codeine” frequency rank
- 40901
- confusion score
Side-by-Side Comparison
| Feature | cocaine | codeine |
|---|---|---|
| Definition | An addictive drug derived from coca (Erythroxylum) or prepared synthetically, used sometimes medicinally as a local anesthetic and, often illegally, as a stimulant. | An addictive alkaloid narcotic derived from opium and used as a hypnotic, analgesic and antitussive; often mixed with aspirin etc. |
Where the eye mixes cocaine and codeine
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.
Visual trap between cocaine and codeine
A purely visual mix-up. cocaine (/kə(ʊ)ˈkeɪn/) and codeine (/ˈkəʊ.diːn/) 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 40901, derived from the frequency rank of both members and their visual similarity.
cocaine is recorded at frequency rank #7,321, classified as anoun, pronounced /kə(ʊ)ˈkeɪn/. codeine is at rank #33,580, tagged as anoun, pronounced /ˈkəʊ.diːn/.
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 40901, this pair ranks #263,380 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of cocaine vs codeine
Shared letters: ceino. Private to "cocaine": a. Private to "codeine": d.
"cocaine" · 7 letters · shape CVCVVCV · "codeine" · 7 letters · shape CVCVVCV
Known mistypes of this pair
Frequently Asked Questions
Can "cocaine" and "codeine" be used interchangeably?
In ordinary English text, does "cocaine" or "codeine" show up more?
After this comparison
Eye-level mix-up between "cocaine" and "codeine" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "cocaine" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "codeine" - compare definitions side by side with the headword page. Word entry
- This pair ranks #263,380 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "cocaine" and "codeine" also get mixed up with nearby pairs, the highest-scored neighbour is "codeine vs confine". 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 #263,380 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.