bichovsbilhãoTell them apart

Quick tell: bicho is a noun, bilhão is a num, so they fill different roles in a sentence.

Which to use

“bicho” is a noun and “bilhão” is a num - they look or sound alike but fill different roles in a sentence.

#7,106
“bicho” frequency rank
#6,380
“bilhão” frequency rank
13486
confusion score

Side-by-Side Comparison

Feature bicho bilhão
Definition sinônimo de animal um milhão de milhões; 1.000.000.000.000

Letter map: bicho vs bilhão

Shared letters muted; letters that set bicho and bilhão apart highlighted. Shared run: 4.

5 ch
bicho
6 ch
bilhão

Part-of-speech tell for bicho / bilhão

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: bicho is anoun and bilhãoanum. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 13486, derived from the frequency rank of both members and their visual similarity.

bicho is recorded at frequency rank #7,106, classified as anoun. bilhão is at rank #6,380, tagged as anum, pronounced /bi.'ʎoŋ/.

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 13486, this pair ranks #58,840 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of bicho vs bilhão

Shared letters: bhio. Private to "bicho": c. Private to "bilhão": .

"bicho" · 5 letters · shape CVCCV  ·  "bilhão" · 6 letters · shape CVCCVV

Known mistypes of this pair

  • bichobbicho · bciho · biccho · bichho · bicoh · bihco · ibcho

Frequently Asked Questions

Can "bicho" and "bilhão" be used interchangeably?
No - they are not even the same part of speech. "bicho" is a noun and "bilhão" a num, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "bicho" or "bilhão"?
"bilhão" is the more common of the two: it sits at frequency rank #6,380 in our Portuguese list, against #7,106 for "bicho". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pair "bicho" vs "bilhão" is on the table, pick a follow-up below.

  • Full dictionary entry for "bicho" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "bilhão" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #58,840 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "bicho" and "bilhão" also get mixed up with nearby pairs, the highest-scored neighbour is "bilhão vs bilião". 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 #58,840 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