# flu vs fluid

> English confusable word pair

## The two words

### flu
*noun · IPA /fluː/ · frequency rank #7,564*
Influenza.

### fluid
*noun · IPA /ˈfluːɪd/ · frequency rank #4,946*
Any substance which can flow with relative ease, tends to assume the shape of its container, and obeys Bernoulli's principle; a liquid, gas or plasma.

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