Which to use
“lei” and “lum” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #23,328
- “lei” frequency rank
- #47,736
- “lum” frequency rank
- 71064
- confusion score
Side-by-Side Comparison
| Feature | lei | lum |
|---|---|---|
| Definition | A garland of flowers in Hawaii. | A chimney; also, the top part of a chimney. |
Where the eye mixes lei and lum
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. lei (CVV) and lum (CVC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Look-alike desk: lei vs lum
A purely visual mix-up. lei (/leɪ/) and lum (/lʌm/) 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 71064, derived from the frequency rank of both members and their visual similarity.
lei is recorded at frequency rank #23,328, classified as anoun, pronounced /leɪ/. lum is at rank #47,736, tagged as anoun, pronounced /lʌm/.
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 71064, this pair ranks #48,135 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of lei vs lum
Shared letters: l. Private to "lei": ei. Private to "lum": mu.
"lei" · 3 letters · shape CVV · "lum" · 3 letters · shape CVC
Frequently Asked Questions
Can "lei" and "lum" be used interchangeably?
Which is more common, "lei" or "lum"?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "lei" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "lum" - compare definitions side by side with the headword page. Word entry
- This pair ranks #48,135 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "lei" and "lum" also get mixed up with nearby pairs, the highest-scored neighbour is "LSC vs lum". Nearby pair
Confusion rank #48,135 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.