lainvslunConfusable pair

Quick tell: lain is a verb, lun is a noun, so they fill different roles in a sentence.

Which to use

“lain” is a verb and “lun” is a noun - they look or sound alike but fill different roles in a sentence.

#34,154
“lain” frequency rank
#43,244
“lun” frequency rank
77398
confusion score

Side-by-Side Comparison

Feature lain lun
Definition past participle of lie (“to be oriented in a horizontal position, situated”) Alternative form of lown.

Letter map: lain vs lun

Shared letters muted; letters that set lain and lun apart highlighted. Shared run: 2. lain runs 4 letters (CVVC) against lun's 3 (CVC) - the length gap alone is often enough to separate them once you know to check it.

4 ch
lain
3 ch
lun

Role in the sentence - lain and lun

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: lain is averb and lunanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 77398, derived from the frequency rank of both members and their visual similarity.

lain is recorded at frequency rank #34,154, classified as averb, pronounced /leɪn/. lun is at rank #43,244, tagged as anoun.

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 77398, this pair ranks #27,400 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of lain vs lun

Shared letters: ln. Private to "lain": ai. Private to "lun": u.

"lain" · 4 letters · shape CVVC  ·  "lun" · 3 letters · shape CVC

Known mistypes of this pair

  • lain ← alin · lainn · lani · llain

Frequently Asked Questions

Can "lain" and "lun" be used interchangeably?
No - they are not even the same part of speech. "lain" is a verb and "lun" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "lain" or "lun"?
"lain" is the more common of the two: it sits at frequency rank #34,154 in our English list, against #43,244 for "lun". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pair "lain" vs "lun" is on the table, pick a follow-up below.

  • Full dictionary entry for "lain" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "lun" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #27,400 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "lain" and "lun" also get mixed up with nearby pairs, the highest-scored neighbour is "LSC vs lun". 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 #27,400 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list