# bday vs BPA

> English confusable word pair

## The two words

### bday
*noun · IPA /ˈbiːdeɪ/ · frequency rank #42,020*
Abbreviation of birthday.

### BPA
*noun · frequency rank #31,882*
Abbreviation of bisphenol A.

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