# bir vs bu

> Spanish confusable word pair

## The two words

### bir
*num · IPA [bir] · frequency rank #48,247*
Uno, un.

### bu
*intj · IPA [ˈbu] · frequency rank #16,776*
Se usa para asustar a alguien.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/es/vs/bir-vs-bu