boa vs bum, What's the Difference?

Which to use

“boa” and “bum” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#165
“boa” frequency rank: #16,457
“bum” frequency rank: 16622
confusion score

Side-by-Side Comparison

Feature	boa	bum
Definition	jiboia	crescimento

Letter map: boa vs bum

Shared letters muted; letters that set boa and bum apart highlighted. Shared run: 1.

3 ch

boa

3 ch

bum

Corpus notes: boa and bum

boa and bum are indexed as a confusable Portuguese pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 16622, derived from the frequency rank of both members and their visual similarity.

boa is recorded at frequency rank #165, classified as anoun, pronounced /ˈbo.ɐ/. bum is at rank #16,457, tagged as anoun.

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 16622, this pair ranks #54,875 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of boa vs bum

Shared letters: b. Private to "boa": ao. Private to "bum": mu.

"boa" · 3 letters · shape CVV · "bum" · 3 letters · shape CVC

Frequently Asked Questions

Do "boa" and "bum" mean the same thing in a sentence?

No. They share most of their letters but differ in 2 positions, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.

In ordinary Portuguese text, does "boa" or "bum" show up more?

"boa" is the more common of the two: it sits at frequency rank #165 in our Portuguese list, against #16,457 for "bum". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Pair "boa" vs "bum" is on the table, pick a follow-up below.

Full dictionary entry for "boa" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "bum" - compare definitions side by side with the headword page. Word entry
This pair ranks #54,875 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"boa" and "bum" also get mixed up with nearby pairs, the highest-scored neighbour is "bué vs bum". Nearby pair

Confusion rank #54,875 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.