lasavsláserWhich spelling fits?

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

Which to use

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

#45,408
“lasa” frequency rank
#10,171
“láser” frequency rank
55579
confusion score

Side-by-Side Comparison

Feature lasa láser
Definition Tercera persona singular del presente de indicativo del verbo lasar. Dispositivo que utiliza la emisión inducida para generar un haz de luz coherente tanto espacial como temporalmente.

Where the eye mixes lasa and láser

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. lasa runs 4 letters (CVCV) against láser's 5 (CVCVC) - the length gap alone is often enough to separate them once you know to check it.

4 ch
lasa
5 ch
láser

Look-alike desk: lasa vs láser

These two trip readers on the page rather than in the ear: lasa is [ˈlasa] while láser is [ˈlaseɾ]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 55579, derived from the frequency rank of both members and their visual similarity.

lasa is recorded at frequency rank #45,408, classified as averb, pronounced [ˈlasa]. láser is at rank #10,171, tagged as anoun, pronounced [ˈlaseɾ].

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 55579, this pair ranks #78,278 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of lasa vs láser

Shared letters: ls. Private to "lasa": a. Private to "láser": erá.

"lasa" · 4 letters · shape CVCV  ·  "láser" · 5 letters · shape CVCVC

Known mistypes of this pair

  • lasa ← lassa · llasa · lsaa

Frequently Asked Questions

Do "lasa" and "láser" mean the same thing in a sentence?
No - they are not even the same part of speech. "lasa" is a verb and "láser" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "lasa" or "láser" show up more?
"láser" is the more common of the two: it sits at frequency rank #10,171 in our Spanish list, against #45,408 for "lasa". 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 "lasa" and "láser" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "lasa" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "láser" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #78,278 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "lasa" and "láser" also get mixed up with nearby pairs, the highest-scored neighbour is "lasa vs Lyra". 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 #78,278 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