bilhãovsbrilharWhich spelling fits?

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

Which to use

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

#6,380
“bilhão” frequency rank
#9,965
“brilhar” frequency rank
16345
confusion score

Side-by-Side Comparison

Feature bilhão brilhar
Definition um milhão de milhões; 1.000.000.000.000 despedir brilho

Where the eye mixes bilhão and brilhar

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. bilhão runs 6 letters (CVCCVV) against brilhar's 7 (CCVCCVC) - the length gap alone is often enough to separate them once you know to check it.

6 ch
bilhão
7 ch
brilhar

Look-alike desk: bilhão vs brilhar

These two trip readers on the page rather than in the ear: bilhão is /bi.'ʎoŋ/ while brilhar is /bɾi.ˈʎaɾ/. 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 (num vs verb), which is usually the fastest check. Our composite confusion score for this pair is 16345, derived from the frequency rank of both members and their visual similarity.

bilhão is recorded at frequency rank #6,380, classified as anum, pronounced /bi.'ʎoŋ/. brilhar is at rank #9,965, tagged as averb, pronounced /bɾi.ˈʎaɾ/.

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 16345, this pair ranks #55,220 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of bilhão vs brilhar

Shared letters: bhil. Private to "bilhão": oã. Private to "brilhar": ar.

"bilhão" · 6 letters · shape CVCCVV  ·  "brilhar" · 7 letters · shape CCVCCVC

Known mistypes of this pair

  • brilhar ← bbrilhar · birlhar · brihlar · brilahr · brilharr · brilhhar · brilhra · brillhar

Frequently Asked Questions

Do "bilhão" and "brilhar" mean the same thing in a sentence?
No - they are not even the same part of speech. "bilhão" is a num and "brilhar" a verb, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "bilhão" or "brilhar" show up more?
"bilhão" is the more common of the two: it sits at frequency rank #6,380 in our Portuguese list, against #9,965 for "brilhar". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Eye-level mix-up between "bilhão" and "brilhar" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "bilhão" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "brilhar" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #55,220 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "bilhão" and "brilhar" also get mixed up with nearby pairs, the highest-scored neighbour is "bailar vs brilhar". 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 #55,220 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