bomvsboyWhat's the difference?

Quick tell: bom is a adjective, boy is a noun, so they fill different roles in a sentence.

Which to use

“bom” is an adjective and “boy” is a noun - they look or sound alike but fill different roles in a sentence.

#96
“bom” frequency rank
#3,884
“boy” frequency rank
3980
confusion score

Side-by-Side Comparison

Feature bom boy
Definition que corresponde plenamente ao que é exigido, desejado ou esperado quanto à sua natureza, adequação, função, eficácia, funcionamento etc. (falando de ser ou coisa) garoto, rapaz, jovem

Letter map: bom vs boy

Shared letters muted; letters that set bom and boy apart highlighted. Shared run: 2.

3 ch
bom
3 ch
boy

Part-of-speech tell for bom / boy

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: bom is anadjective and boyanoun. On the page they differ by a single letter - m in “bom” becomes y in “boy”. Our composite confusion score for this pair is 3980, derived from the frequency rank of both members and their visual similarity.

bom is recorded at frequency rank #96, classified as anadj. boy is at rank #3,884, tagged as anoun, pronounced /bɔɪ/.

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 3980, this pair ranks #71,070 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of bom vs boy

Shared letters: bo. Private to "bom": m. Private to "boy": y.

"bom" · 3 letters · shape CVC  ·  "boy" · 3 letters · shape CVV

Frequently Asked Questions

Can "bom" and "boy" be used interchangeably?
No - they are not even the same part of speech. "bom" is an adjective and "boy" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "bom" vs "boy" - which ranks higher?
"bom" is the more common of the two: it sits at frequency rank #96 in our Portuguese list, against #3,884 for "boy". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

You've compared "bom" and "boy". Here's where to go from here.

  • Full dictionary entry for "bom" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "boy" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #71,070 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "bom" and "boy" also get mixed up with nearby pairs, the highest-scored neighbour is "boy vs bué". Nearby pair

Confusion rank #71,070 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