Which to use
“log” and “lux” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #3,826
- “log” frequency rank
- #18,878
- “lux” frequency rank
- 22704
- confusion score
Side-by-Side Comparison
| Feature | log | lux |
|---|---|---|
| Definition | The trunk of a dead tree, cleared of branches. | In the International System of Units, the derived unit of illuminance or illumination; one lumen per square metre. Symbol: lx |
Where the eye mixes log and lux
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between log and lux
A purely visual mix-up. log (/lɒɡ/) 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 share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 22704, derived from the frequency rank of both members and their visual similarity.
log is recorded at frequency rank #3,826, classified as anoun, pronounced /lɒɡ/. 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 22704, this pair ranks #414,625 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of log vs lux
Shared letters: l. Private to "log": go. Private to "lux": ux.
"log" · 3 letters · shape CVC · "lux" · 3 letters · shape CVC
Frequently Asked Questions
Do "log" and "lux" mean the same thing in a sentence?
Frequency check: "log" vs "lux" - 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 "log" 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 #414,625 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "log" and "lux" also get mixed up with nearby pairs, the highest-scored neighbour is "LSC vs lux". Nearby pair
Confusion rank #414,625 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.