lah vs lb, What's the Difference?

Which to use

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

#44,894
“lah” frequency rank: #7,936
“lb” frequency rank: 52830
confusion score

Side-by-Side Comparison

Feature	lah	lb
Definition	Alternative spelling of la.	Abbreviation of pound (“unit of weight”).

Where the eye mixes lah and lb

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

3 ch

lah

2 ch

Visual trap between lah and lb

A purely visual mix-up. lah (/lɑː/) and lb (/paʊnd/) 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 52830, derived from the frequency rank of both members and their visual similarity.

lah is recorded at frequency rank #44,894, classified as anoun, pronounced /lɑː/. lb is at rank #7,936, tagged as anoun, pronounced /paʊnd/.

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 52830, this pair ranks #153,859 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of lah vs lb

Shared letters: l. Private to "lah": ah. Private to "lb": b.

"lah" · 3 letters · shape CVC · "lb" · 2 letters · shape CC

Frequently Asked Questions

Can "lah" and "lb" be used interchangeably?

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

In ordinary English text, does "lah" or "lb" show up more?

"lb" is the more common of the two: it sits at frequency rank #7,936 in our English list, against #44,894 for "lah". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

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 "lah" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "lb" - compare definitions side by side with the headword page. Word entry
This pair ranks #153,859 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"lah" and "lb" also get mixed up with nearby pairs, the highest-scored neighbour is "lah vs LSC". Nearby pair

Confusion rank #153,859 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.