luck vs Lui, What's the Difference?

Which to use

“luck” is a noun and “Lui” is a name - they look or sound alike but fill different roles in a sentence.

#1,312
“luck” frequency rank: #28,983
“Lui” frequency rank: 30295
confusion score

Side-by-Side Comparison

Feature	luck	Lui
Definition	Something that happens to someone by chance, a chance occurrence.	A surname from Chinese.

Letter map: luck vs Lui

Shared letters muted; letters that set luck and Lui apart highlighted. Shared run: 2.

4 ch

luck

3 ch

Lui

Grammar separator: luck vs Lui

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: luck is anoun and Luianame. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 30295, derived from the frequency rank of both members and their visual similarity.

luck is recorded at frequency rank #1,312, classified as anoun, pronounced /lʌk/. Lui is at rank #28,983, tagged as aname.

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 30295, this pair ranks #355,757 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of luck vs Lui

Shared letters: lu. Private to "luck": ck. Private to "Lui": i.

"luck" · 4 letters · shape CVCC · "Lui" · 3 letters · shape CVV

Known mistypes of this pair

luck ← lcuk · lluck · lucck · luckk · lukc · ulck

Frequently Asked Questions

Can "luck" and "Lui" be used interchangeably?

No - they are not even the same part of speech. "luck" is a noun and "Lui" a name, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "luck" or "Lui"?

"luck" is the more common of the two: it sits at frequency rank #1,312 in our English list, against #28,983 for "Lui". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

You've compared "luck" and "Lui". Here's where to go from here.

Full dictionary entry for "luck" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "Lui" - compare definitions side by side with the headword page. Word entry
This pair ranks #355,757 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"luck" and "Lui" also get mixed up with nearby pairs, the highest-scored neighbour is "LSC vs Lui". 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 #355,757 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.