cadavscatWhat's the difference?

Quick tell: cada is a pronoun, cat is a noun, so they fill different roles in a sentence.

Which to use

“cada” is a pronoun and “cat” is a noun - they look or sound alike but fill different roles in a sentence.

#144
“cada” frequency rank
#7,740
“cat” frequency rank
7884
confusion score

Side-by-Side Comparison

Feature cada cat
Definition indica, individualizando, um elemento de um grupo ou conjunto: gato (Felis catus)

Where the eye mixes cada and cat

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
cada
3 ch
cat

Look-alike desk: cada vs cat

These two trip readers on the page rather than in the ear: cada is /ˈkɐ.dɐ/ while cat is /kʰaʰt̪/. 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 (pronoun vs noun), which is usually the fastest check. Our composite confusion score for this pair is 7884, derived from the frequency rank of both members and their visual similarity.

cada is recorded at frequency rank #144, classified as apron, pronounced /ˈkɐ.dɐ/. cat is at rank #7,740, tagged as anoun, pronounced /kʰaʰt̪/.

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 7884, this pair ranks #66,099 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of cada vs cat

Shared letters: ac. Private to "cada": d. Private to "cat": t.

"cada" · 4 letters · shape CVCV  ·  "cat" · 3 letters · shape CVC

Known mistypes of this pair

  • cadaacda · caad · cadda · ccada · cdaa

Frequently Asked Questions

Can "cada" and "cat" be used interchangeably?
No - they are not even the same part of speech. "cada" is a pronoun and "cat" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "cada" or "cat"?
"cada" is the more common of the two: it sits at frequency rank #144 in our Portuguese list, against #7,740 for "cat". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

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

  • Full dictionary entry for "cada" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "cat" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #66,099 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "cada" and "cat" also get mixed up with nearby pairs, the highest-scored neighbour is "cat vs chau". 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 #66,099 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list