casarãovscastroWhat's the difference?

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

Which to use

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

#22,902
“casarão” frequency rank
#2,264
“castro” frequency rank
25166
confusion score

Side-by-Side Comparison

Feature casarão castro
Definition aumentativo de casa; casa grande cortar

Where the spellings diverge

Shared letters are muted; the letters that actually set casarão and castro apart are highlighted. They share 5 letters in sequence, which is exactly why the eye skips the difference.

7 ch
casarão
6 ch
castro

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: casarão is /kɐ.zɐ.ˈɾɐ̃w̃/ while castro is /ˈkas.troː/. 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 (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 25166, derived from the frequency rank of both members and their visual similarity.

casarão is recorded at frequency rank #22,902, classified as anoun, pronounced /kɐ.zɐ.ˈɾɐ̃w̃/. castro is at rank #2,264, tagged as averb, pronounced /ˈkas.troː/.

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 25166, this pair ranks #44,218 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of casarão vs castro

Shared letters: acors. Private to "casarão": ã. Private to "castro": t.

"casarão" · 7 letters · shape CVCVCVV  ·  "castro" · 6 letters · shape CVCCCV

Known mistypes of this pair

  • castroacstro · casrto · casstro · castrro · casttro · catsro · ccastro · csatro

Frequency comparison

casarão#22,902
castro#2,264

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "casarão" and "castro" be used interchangeably?
No - they are not even the same part of speech. "casarão" is a noun and "castro" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "casarão" or "castro"?
"castro" is the more common of the two: it sits at frequency rank #2,264 in our Portuguese list, against #22,902 for "casarão". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Remembering casarão vs castro

The fastest way to pick the right one every time.

  • Check the role first: if you need a noun, it's “casarão”; for a verb, it's “castro”.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “casarão” entry
  • Browse more pairs most likely to be confused. Most confusable

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list