bis vs Bus, What's the Difference?

Which to use

“bis” is a preposition and “Bus” is a noun - they look or sound alike but fill different roles in a sentence.

#14,300
“bis” frequency rank: #13,676
“Bus” frequency rank: 27976
confusion score

Side-by-Side Comparison

Feature	bis	Bus
Definition	até	ônibus.

Letter map: bis vs Bus

Shared letters muted; letters that set bis and Bus apart highlighted. Shared run: 2.

3 ch

bis

3 ch

Bus

Grammar separator: bis vs Bus

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: bis is apreposition and Busanoun. On the page they differ by a single letter - i in “bis” becomes u in “Bus”. Our composite confusion score for this pair is 27976, derived from the frequency rank of both members and their visual similarity.

bis is recorded at frequency rank #14,300, classified as aprep. Bus is at rank #13,676, tagged as anoun, pronounced Geral^(fonte ?).

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 27976, this pair ranks #40,918 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of bis vs Bus

Shared letters: bs. Private to "bis": i. Private to "Bus": u.

"bis" · 3 letters · shape CVC · "Bus" · 3 letters · shape CVC

Frequently Asked Questions

Can "bis" and "Bus" be used interchangeably?

No - they are not even the same part of speech. "bis" is a preposition and "Bus" a noun, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "bis" or "Bus"?

"Bus" is the more common of the two: it sits at frequency rank #13,676 in our Portuguese list, against #14,300 for "bis". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

You've compared "bis" and "Bus". Here's where to go from here.

Full dictionary entry for "bis" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "Bus" - compare definitions side by side with the headword page. Word entry
This pair ranks #40,918 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"bis" and "Bus" also get mixed up with nearby pairs, the highest-scored neighbour is "bile vs bis". Nearby pair

Confusion rank #40,918 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.