Which to use
“duchy” and “duct” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #28,900
- “duchy” frequency rank
- #13,330
- “duct” frequency rank
- 42230
- confusion score
Side-by-Side Comparison
| Feature | duchy | duct |
|---|---|---|
| Definition | A dominion or region ruled by a duke or duchess. | A pipe, tube or canal which carries gas or liquid from one place to another. |
Where the eye mixes duchy and duct
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. duchy runs 5 letters (CVCCV) against duct's 4 (CVCC) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses duchy with duct
A purely visual mix-up. duchy (/ˈdʌt͡ʃi/) and duct (/dʌkt/) 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 letter(s) in length. Our composite confusion score for this pair is 42230, derived from the frequency rank of both members and their visual similarity.
duchy is recorded at frequency rank #28,900, classified as anoun, pronounced /ˈdʌt͡ʃi/. duct is at rank #13,330, tagged as anoun, pronounced /dʌkt/.
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 42230, this pair ranks #251,119 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of duchy vs duct
Shared letters: cdu. Private to "duchy": hy. Private to "duct": t.
"duchy" · 5 letters · shape CVCCV · "duct" · 4 letters · shape CVCC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "duchy" for "duct" ever safe?
Which is more common, "duchy" or "duct"?
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 "duchy" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "duct" - compare definitions side by side with the headword page. Word entry
- This pair ranks #251,119 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "duchy" and "duct" also get mixed up with nearby pairs, the highest-scored neighbour is "decry vs duchy". 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 #251,119 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.