# flat vs flue

> English confusable word pair

## The two words

### flat
*adjective · IPA /flæt/ · frequency rank #1,941*
Having no variations in height.

### flue
*noun · IPA /fluː/ · frequency rank #38,401*
A pipe or duct that carries gaseous combustion products away from the point of combustion (such as a furnace).

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