casevscisneTell them apart

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

Which to use

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

#10,632
“case” frequency rank
#19,954
“cisne” frequency rank
30586
confusion score

Side-by-Side Comparison

Feature case cisne
Definition Primera persona del singular (yo) del presente de subjuntivo de casar. Ave palmípeda, con un característico cuello largo. Género Cygnus

Where the eye mixes case and cisne

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

4 ch
case
5 ch
cisne

Visual trap between case and cisne

These two trip readers on the page rather than in the ear: case is [ˈkase] while cisne is [ˈsisne]. 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 30586, derived from the frequency rank of both members and their visual similarity.

case is recorded at frequency rank #10,632, classified as averb, pronounced [ˈkase]. cisne is at rank #19,954, tagged as anoun, pronounced [ˈsisne].

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 30586, this pair ranks #211,260 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of case vs cisne

Shared letters: ces. Private to "case": a. Private to "cisne": in.

"case" · 4 letters · shape CVCV  ·  "cisne" · 5 letters · shape CVCCV

Known mistypes of this pair

  • caseacse · cace · casse · ccase · csae
  • cisneccisne · cinse · cisen · cisnne · cissne · csine · icsne · sisne

Frequently Asked Questions

Can "case" and "cisne" be used interchangeably?
No - they are not even the same part of speech. "case" is a verb and "cisne" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "case" or "cisne" show up more?
"case" is the more common of the two: it sits at frequency rank #10,632 in our Spanish list, against #19,954 for "cisne". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

  • Full dictionary entry for "case" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "cisne" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #211,260 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "case" and "cisne" also get mixed up with nearby pairs, the highest-scored neighbour is "cinc vs cisne". 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 #211,260 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