sarnavssirenaWhat's the difference?

Which to use

“sarna” and “sirena” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#35,746
“sarna” frequency rank
#14,712
“sirena” frequency rank
50458
confusion score

Side-by-Side Comparison

Feature sarna sirena
Definition Enfermedad de la piel causada por el arador (Sarcoptes scabiei), un ácaro parásito, que penetra y progresa bajo la piel produciendo hinchazones y comezón. Ser fabuloso, parte mujer y parte ave, que atraía a los marineros a la perdición con su canto.

Where the eye mixes sarna and sirena

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. sarna runs 5 letters (CVCCV) against sirena's 6 (CVCVCV) - the length gap alone is often enough to separate them once you know to check it.

5 ch
sarna
6 ch
sirena

Why the eye confuses sarna with sirena

A purely visual mix-up. sarna ([ˈsaɾna]) and sirena ([siˈɾena]) 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 50458, derived from the frequency rank of both members and their visual similarity.

sarna is recorded at frequency rank #35,746, classified as anoun, pronounced [ˈsaɾna]. sirena is at rank #14,712, tagged as anoun, pronounced [siˈɾena].

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 50458, this pair ranks #103,101 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of sarna vs sirena

Shared letters: anrs. Private to "sarna": -. Private to "sirena": ei.

"sarna" · 5 letters · shape CVCCV  ·  "sirena" · 6 letters · shape CVCVCV

Known mistypes of this pair

  • sarna ← asrna · saran · sarnna · sarrna · srana · ssarna
  • sirena ← cirena · isrena · sierna · sirean · sirenna · sirnea · sirrena · sriena

Frequently Asked Questions

Is swapping "sarna" for "sirena" ever safe?
No. They are said differently ([ˈsaɾna] versus [siˈɾena]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary Spanish text, does "sarna" or "sirena" show up more?
"sirena" is the more common of the two: it sits at frequency rank #14,712 in our Spanish list, against #35,746 for "sarna". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "sarna" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sirena" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #103,101 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "sarna" and "sirena" also get mixed up with nearby pairs, the highest-scored neighbour is "sarna vs Syria". 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 #103,101 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