bivsboxWhat's the difference?

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

Which to use

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

#7,501
“bi” frequency rank
#6,381
“box” frequency rank
13882
confusion score

Side-by-Side Comparison

Feature bi box
Definition bissexual cada espaço subdividido por parede ou extrutura similar e que é destinado ao uso comercial dentro de uma construção maior

Letter map: bi vs box

Shared letters muted; letters that set bi and box apart highlighted. Shared run: 1.

2 ch
bi
3 ch
box

Grammar separator: bi vs box

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: bi is anadjective and boxanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 13882, derived from the frequency rank of both members and their visual similarity.

bi is recorded at frequency rank #7,501, classified as anadj. box is at rank #6,381, 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 13882, this pair ranks #58,334 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of bi vs box

Shared letters: b. Private to "bi": i. Private to "box": ox.

"bi" · 2 letters · shape CV  ·  "box" · 3 letters · shape CVC

Frequently Asked Questions

Is swapping "bi" for "box" ever safe?
No - they are not even the same part of speech. "bi" is an adjective and "box" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "bi" or "box" show up more?
"box" is the more common of the two: it sits at frequency rank #6,381 in our Portuguese list, against #7,501 for "bi". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Done with this confusable. These links stay specific to "bi" and "box".

  • Full dictionary entry for "bi" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "box" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #58,334 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "bi" and "box" also get mixed up with nearby pairs, the highest-scored neighbour is "bi vs bile". Nearby pair

Confusion rank #58,334 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