# flash vs flask

> English confusable word pair

## The two words

### flash
*verb · IPA /flæʃ/ · frequency rank #3,299*
To cause to shine briefly or intermittently.

### flask
*noun · IPA /ˈflɑːsk/ · frequency rank #22,379*
A narrow-necked vessel of metal or glass, used for various purposes; as of sheet metal, to carry gunpowder in; or of wrought iron, to contain quicksilver; or of glass, to heat water in, etc.

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