cáncervscansarTell them apart

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

Which to use

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

#1,844
“cáncer” frequency rank
#31,251
“cansar” frequency rank
33095
confusion score

Side-by-Side Comparison

Feature cáncer cansar
Definition Enfermedad en la que las células de varios tejidos del cuerpo inician una proliferación descontrolada y con frecuencia veloz. Producir fatiga o cansancio.

Where the eye mixes cáncer and cansar

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. cáncer and cansar follow the identical consonant-vowel pattern (CVCCVC). Same shape at a glance is often the real trap, independent of shared letters.

6 ch
cáncer
6 ch
cansar

Visual trap between cáncer and cansar

These two trip readers on the page rather than in the ear: cáncer is [ˈkãnseɾ] while cansar is [kãnˈsaɾ]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 3 positions, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 33095, derived from the frequency rank of both members and their visual similarity.

cáncer is recorded at frequency rank #1,844, classified as anoun, pronounced [ˈkãnseɾ]. cansar is at rank #31,251, tagged as averb, pronounced [kãnˈsaɾ].

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 33095, this pair ranks #198,599 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of cáncer vs cansar

Shared letters: cnr. Private to "cáncer": eá. Private to "cansar": as.

"cáncer" · 6 letters · shape CVCCVC  ·  "cansar" · 6 letters · shape CVCCVC

Known mistypes of this pair

  • cansar ← acnsar · canasr · cannsar · cansarr · cansra · canssar · casnar · ccansar

Frequently Asked Questions

Do "cáncer" and "cansar" mean the same thing in a sentence?
No - they are not even the same part of speech. "cáncer" is a noun and "cansar" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "cáncer" or "cansar"?
"cáncer" is the more common of the two: it sits at frequency rank #1,844 in our Spanish list, against #31,251 for "cansar". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

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

  • Full dictionary entry for "cáncer" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "cansar" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #198,599 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "cáncer" and "cansar" also get mixed up with nearby pairs, the highest-scored neighbour is "cansar vs casará". 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 #198,599 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