LP vs lux, What's the Difference?

Which to use

“LP” and “lux” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#8,955
“LP” frequency rank: #18,878
“lux” frequency rank: 27833
confusion score

Side-by-Side Comparison

Feature	LP	lux
Definition	Initialism of long-play.	In the International System of Units, the derived unit of illuminance or illumination; one lumen per square metre. Symbol: lx

Where the eye mixes LP and lux

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

2 ch

3 ch

lux

Look-alike desk: LP vs lux

A purely visual mix-up. LP (/ɛlˈpiː/) 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 differ by 1 letter(s) in length. Our composite confusion score for this pair is 27833, derived from the frequency rank of both members and their visual similarity.

LP is recorded at frequency rank #8,955, classified as anoun, pronounced /ɛlˈpiː/. 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 27833, this pair ranks #375,755 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of LP vs lux

Shared letters: l. Private to "LP": p. Private to "lux": ux.

"LP" · 2 letters · shape CC · "lux" · 3 letters · shape CVC

Frequently Asked Questions

Is swapping "LP" for "lux" ever safe?

No. They are said differently (/ɛlˈpiː/ versus /lʌks/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.

Which is more common, "LP" or "lux"?

"LP" is the more common of the two: it sits at frequency rank #8,955 in our English list, against #18,878 for "lux". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

Full dictionary entry for "LP" 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 #375,755 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"LP" and "lux" also get mixed up with nearby pairs, the highest-scored neighbour is "LSC vs lux". Nearby pair

Confusion rank #375,755 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.