lunavslungWhat's the difference?

Which to use

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

#12,634
“luna” frequency rank
#6,070
“lung” frequency rank
18704
confusion score

Side-by-Side Comparison

Feature luna lung
Definition A luna moth: a member of species Actias luna. A biological organ of vertebrates that controls breathing and oxygenates the blood.

Where the eye mixes luna and lung

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

4 ch
luna
4 ch
lung

Look-alike desk: luna vs lung

A purely visual mix-up. luna (/ˈluːnə/) and lung (/ˈlʌŋ/) 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 a single letter - a in “luna” becomes g in “lung”. Our composite confusion score for this pair is 18704, derived from the frequency rank of both members and their visual similarity.

luna is recorded at frequency rank #12,634, classified as anoun, pronounced /ˈluːnə/. lung is at rank #6,070, tagged as anoun, pronounced /ˈlʌŋ/.

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 18704, this pair ranks #443,093 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of luna vs lung

Shared letters: lnu. Private to "luna": a. Private to "lung": g.

"luna" · 4 letters · shape CVCV  ·  "lung" · 4 letters · shape CVCC

Known mistypes of this pair

  • lunalluna · lnua · luan · lunna · ulna
  • lungllung · lnug · lugn · lungg · lunng · ulng

Frequently Asked Questions

Can "luna" and "lung" be used interchangeably?
No. They are said differently (/ˈluːnə/ versus /ˈlʌŋ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "luna" or "lung"?
"lung" is the more common of the two: it sits at frequency rank #6,070 in our English list, against #12,634 for "luna". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Eye-level mix-up between "luna" and "lung" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "luna" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "lung" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #443,093 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "luna" and "lung" also get mixed up with nearby pairs, the highest-scored neighbour is "Lanza vs luna". 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 #443,093 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