bird vs bis, What's the Difference?

Which to use

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

#14,080
“bird” frequency rank: #14,300
“bis” frequency rank: 28380
confusion score

Side-by-Side Comparison

Feature	bird	bis
Definition	pássaro, ave:	até

Letter map: bird vs bis

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

4 ch

bird

3 ch

bis

Role in the sentence - bird and bis

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: bird is anoun and bisapreposition. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 28380, derived from the frequency rank of both members and their visual similarity.

bird is recorded at frequency rank #14,080, classified as anoun, pronounced /bɝd/. bis is at rank #14,300, tagged as aprep.

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 28380, this pair ranks #40,433 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of bird vs bis

Shared letters: bi. Private to "bird": dr. Private to "bis": s.

"bird" · 4 letters · shape CVCC · "bis" · 3 letters · shape CVC

Known mistypes of this pair

bird ← bbird · bidr · birdd · birrd · brid · ibrd

Frequently Asked Questions

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

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

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

"bird" is the more common of the two: it sits at frequency rank #14,080 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.

Useful next steps

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

Full dictionary entry for "bird" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "bis" - compare definitions side by side with the headword page. Word entry
This pair ranks #40,433 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"bird" and "bis" also get mixed up with nearby pairs, the highest-scored neighbour is "bile vs bis". 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 #40,433 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.