Which to use
“lux” is a noun and “Luxor” is a name - they look or sound alike but fill different roles in a sentence.
- #18,878
- “lux” frequency rank
- #42,756
- “Luxor” frequency rank
- 61634
- confusion score
Side-by-Side Comparison
| Feature | lux | Luxor |
|---|---|---|
| Definition | In the International System of Units, the derived unit of illuminance or illumination; one lumen per square metre. Symbol: lx | A city in Egypt, located on the site of the ancient Thebes. |
Where the eye mixes lux and Luxor
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. lux runs 3 letters (CVC) against Luxor's 5 (CVCVC) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses lux with Luxor
These two trip readers on the page rather than in the ear: lux is /lʌks/ while Luxor is /ˈlʌksɔː/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “lux” sits inside “Luxor”, and the parts of speech differ too (noun vs name), which is usually the fastest check. Our composite confusion score for this pair is 61634, derived from the frequency rank of both members and their visual similarity.
lux is recorded at frequency rank #18,878, classified as anoun, pronounced /lʌks/. Luxor is at rank #42,756, tagged as aname, pronounced /ˈlʌksɔː/.
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 61634, this pair ranks #93,110 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of lux vs Luxor
Shared letters: lux. Private to "lux": -. Private to "Luxor": or.
"lux" · 3 letters · shape CVC · "Luxor" · 5 letters · shape CVCVC
Known mistypes of this pair
- Luxor ← lluxor · luoxr · luxorr · luxro · luxxor · lxuor · ulxor
Frequently Asked Questions
Is swapping "lux" for "Luxor" ever safe?
Which is more common, "lux" or "Luxor"?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "lux" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "Luxor" - compare definitions side by side with the headword page. Word entry
- This pair ranks #93,110 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "lux" and "Luxor" also get mixed up with nearby pairs, the highest-scored neighbour is "Lugo vs Luxor". 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 #93,110 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.