LujánvslunWhich spelling fits?

Quick tell: Luján is a name, lun is an adjective, so they fill different roles in a sentence.

Which to use

“Luján” is a name and “lun” is an adjective - they look or sound alike but fill different roles in a sentence.

#20,734
“Luján” frequency rank
#37,198
“lun” frequency rank
57932
confusion score

Side-by-Side Comparison

Feature Luján lun
Definition Ciudad de la provincia de Buenos Aires, Argentina, cabecera del partido del mismo nombre. Su gentilicio es lujanense. Flácido, suave, débil.

Where the eye mixes Luján and lun

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. Luján runs 5 letters (CVCVC) against lun's 3 (CVC) - the length gap alone is often enough to separate them once you know to check it.

5 ch
Luján
3 ch
lun

Why the eye confuses Luján with lun

These two trip readers on the page rather than in the ear: Luján is [luˈxãn] while lun is [lun]. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (name vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 57932, derived from the frequency rank of both members and their visual similarity.

Luján is recorded at frequency rank #20,734, classified as aname, pronounced [luˈxãn]. lun is at rank #37,198, tagged as anadj, pronounced [lun].

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 57932, this pair ranks #68,464 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of Luján vs lun

Shared letters: lnu. Private to "Luján": já. Private to "lun": -.

"Luján" · 5 letters · shape CVCVC  ·  "lun" · 3 letters · shape CVC

Frequently Asked Questions

Is swapping "Luján" for "lun" ever safe?
No - they are not even the same part of speech. "Luján" is a name and "lun" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "Luján" or "lun"?
"Luján" is the more common of the two: it sits at frequency rank #20,734 in our Spanish list, against #37,198 for "lun". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "Luján" 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 #68,464 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "Luján" and "lun" also get mixed up with nearby pairs, the highest-scored neighbour is "lac vs lun". Nearby pair

Confusion rank #68,464 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list