# firth vs fish

> English confusable word pair

## The two words

### firth
*noun · IPA /fɜːθ/ · frequency rank #22,972*
An arm or inlet of the sea; a river estuary.

### fish
*noun · IPA /ˈfɪʃ/ · frequency rank #1,339*
A typically cold-blooded vertebrate animal that lives in water, moving with the help of fins and breathing with gills.

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