Which to use
“codeine” is a noun and “combine” is a verb - they look or sound alike but fill different roles in a sentence.
- #33,580
- “codeine” frequency rank
- #5,771
- “combine” frequency rank
- 39351
- confusion score
Side-by-Side Comparison
| Feature | codeine | combine |
|---|---|---|
| Definition | An addictive alkaloid narcotic derived from opium and used as a hypnotic, analgesic and antitussive; often mixed with aspirin etc. | To bring (two or more things or activities) together; to unite. |
Where the eye mixes codeine and combine
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.
Visual trap between codeine and combine
These two trip readers on the page rather than in the ear: codeine is /ˈkəʊ.diːn/ while combine is /kəmˈbaɪn/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 39351, derived from the frequency rank of both members and their visual similarity.
codeine is recorded at frequency rank #33,580, classified as anoun, pronounced /ˈkəʊ.diːn/. combine is at rank #5,771, tagged as averb, pronounced /kəmˈbaɪn/.
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 39351, this pair ranks #277,517 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of codeine vs combine
Shared letters: ceino. Private to "codeine": d. Private to "combine": bm.
"codeine" · 7 letters · shape CVCVVCV · "combine" · 7 letters · shape CVCCVCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "codeine" for "combine" ever safe?
Frequency check: "codeine" vs "combine" - which ranks higher?
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 "codeine" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "combine" - compare definitions side by side with the headword page. Word entry
- This pair ranks #277,517 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "codeine" and "combine" 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 #277,517 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.