cardovscastoWhich spelling fits?

Quick tell: cardo is a noun, casto is an adjective, so they fill different roles in a sentence.

Which to use

“cardo” is a noun and “casto” is an adjective - they look or sound alike but fill different roles in a sentence.

#42,867
“cardo” frequency rank
#44,616
“casto” frequency rank
87483
confusion score

Side-by-Side Comparison

Feature cardo casto
Definition Nombre común dado a múltiples especies de plantas en las familias de las asteráceas, las apiáceas y las dipsacáceas, caracterizadas por un tallo herbáceo vertical de gran porte, tachonado de espinas, e inflorescencias terminales en forma de densos capítulos. Muchas especies son comestibles. Persona que se abstiene de todo goce sexual o lo vive de acuerdo a ciertas directrices dictadas por su religión o su moral.

Where the eye mixes cardo and casto

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

5 ch
cardo
5 ch
casto

Look-alike desk: cardo vs casto

These two trip readers on the page rather than in the ear: cardo is [ˈkaɾð̞o] while casto is [ˈkast̪o]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 87483, derived from the frequency rank of both members and their visual similarity.

cardo is recorded at frequency rank #42,867, classified as anoun, pronounced [ˈkaɾð̞o]. casto is at rank #44,616, tagged as anadj, pronounced [ˈkast̪o].

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 87483, this pair ranks #4,458 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of cardo vs casto

Shared letters: aco. Private to "cardo": dr. Private to "casto": st.

"cardo" · 5 letters · shape CVCCV  ·  "casto" · 5 letters · shape CVCCV

Known mistypes of this pair

  • cardo ← acrdo · cadro · carddo · carod · carrdo · ccardo · crado
  • casto ← acsto · casot · cassto · castto · catso · ccasto · csato

Frequently Asked Questions

Is swapping "cardo" for "casto" ever safe?
No - they are not even the same part of speech. "cardo" is a noun and "casto" an adjective, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "cardo" vs "casto" - which ranks higher?
"cardo" is the more common of the two: it sits at frequency rank #42,867 in our Spanish list, against #44,616 for "casto". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "cardo" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "casto" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #4,458 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "cardo" and "casto" also get mixed up with nearby pairs, the highest-scored neighbour is "casto vs Chasco". 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 #4,458 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