lock vs lucky, What's the Difference?

Which to use

“lock” is a noun and “lucky” is an adjective - they look or sound alike but fill different roles in a sentence.

#22,711
“lock” frequency rank: #12,934
“lucky” frequency rank: 35645
confusion score

Side-by-Side Comparison

Feature	lock	lucky
Definition	fechadura	sortudo, de sorte.

Letter map: lock vs lucky

Shared letters muted; letters that set lock and lucky apart highlighted. Shared run: 3.

4 ch

lock

5 ch

lucky

Role in the sentence - lock and lucky

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: lock is anoun and luckyanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 35645, derived from the frequency rank of both members and their visual similarity.

lock is recorded at frequency rank #22,711, classified as anoun, pronounced /lɒk/. lucky is at rank #12,934, tagged as anadj.

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 35645, this pair ranks #31,374 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of lock vs lucky

Shared letters: ckl. Private to "lock": o. Private to "lucky": uy.

"lock" · 4 letters · shape CVCC · "lucky" · 5 letters · shape CVCCV

Known mistypes of this pair

lock ← lcok · llock · locck · lockk · lokc · olck
lucky ← lcuky · llucky · luccky · luckky · luckyy · lucyk · lukcy · ulcky

Frequently Asked Questions

Can "lock" and "lucky" be used interchangeably?

No - they are not even the same part of speech. "lock" is a noun and "lucky" an adjective, so a sentence built for one is usually ungrammatical with the other.

Frequency check: "lock" vs "lucky" - which ranks higher?

"lucky" is the more common of the two: it sits at frequency rank #12,934 in our Portuguese list, against #22,711 for "lock". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Done with this confusable. These links stay specific to "lock" and "lucky".

Full dictionary entry for "lock" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "lucky" - compare definitions side by side with the headword page. Word entry
This pair ranks #31,374 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"lock" and "lucky" also get mixed up with nearby pairs, the highest-scored neighbour is "loch vs lock". 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 #31,374 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.