Which to use
“luce” and “lux” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #29,356
- “luce” frequency rank
- #18,878
- “lux” frequency rank
- 48234
- confusion score
Side-by-Side Comparison
| Feature | luce | lux |
|---|---|---|
| Definition | The pike, Esox lucius, when fully grown. | In the International System of Units, the derived unit of illuminance or illumination; one lumen per square metre. Symbol: lx |
Where the eye mixes luce and lux
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Visual trap between luce and lux
A purely visual mix-up. luce (/luːs/) and lux (/lʌks/) 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 48234, derived from the frequency rank of both members and their visual similarity.
luce is recorded at frequency rank #29,356, classified as anoun, pronounced /luːs/. lux is at rank #18,878, tagged as anoun, pronounced /lʌks/.
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 48234, this pair ranks #194,991 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of luce vs lux
Shared letters: lu. Private to "luce": ce. Private to "lux": x.
"luce" · 4 letters · shape CVCV · "lux" · 3 letters · shape CVC
Known mistypes of this pair
- luce ← lluce · lucce · luec · ulce
Frequently Asked Questions
Do "luce" and "lux" mean the same thing in a sentence?
In ordinary English text, does "luce" or "lux" show up more?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "luce" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "lux" - compare definitions side by side with the headword page. Word entry
- This pair ranks #194,991 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "luce" and "lux" also get mixed up with nearby pairs, the highest-scored neighbour is "luce vs lucent". 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 #194,991 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.