carovscastoTell them apart

Which to use

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

#3,306
“caro” frequency rank
#44,616
“casto” frequency rank
47922
confusion score

Side-by-Side Comparison

Feature caro casto
Definition Que tiene un alto valor o costo; que excede mucho del valor o estimación regular. 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 caro and casto

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. caro runs 4 letters (CVCV) against casto's 5 (CVCCV) - the length gap alone is often enough to separate them once you know to check it.

4 ch
caro
5 ch
casto

Look-alike desk: caro vs casto

A purely visual mix-up. caro ([ˈkaɾo]) and casto ([ˈkast̪o]) 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 47922, derived from the frequency rank of both members and their visual similarity.

caro is recorded at frequency rank #3,306, classified as anadj, pronounced [ˈkaɾo]. 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 47922, this pair ranks #117,331 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of caro vs casto

Shared letters: aco. Private to "caro": r. Private to "casto": st.

"caro" · 4 letters · shape CVCV  ·  "casto" · 5 letters · shape CVCCV

Known mistypes of this pair

  • caro ← acro · caor · ccaro · crao
  • casto ← acsto · casot · cassto · castto · catso · ccasto · csato

Frequently Asked Questions

Is swapping "caro" for "casto" ever safe?
No. They are said differently ([ˈkaɾo] versus [ˈkast̪o]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "caro" vs "casto" - which ranks higher?
"caro" is the more common of the two: it sits at frequency rank #3,306 in our Spanish list, against #44,616 for "casto". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

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

  • Full dictionary entry for "caro" 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 #117,331 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "caro" 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 #117,331 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