# BFF vs BTU

> English confusable word pair

## The two words

### BFF
*noun · IPA /ˌbiː.ɛfˈɛf/ · frequency rank #30,702*
Initialism of best friend forever.

### BTU
*noun · IPA /biː.tiː.juː/ · frequency rank #45,246*
Initialism of British thermal unit.

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