# crucial vs crucible

> English confusable word pair

## The two words

### crucial
*adjective · IPA /ˈkɹuː.ʃəl/ · frequency rank #4,438*
Essential or decisive for determining the outcome or future of something; extremely important; vital.

### crucible
*noun · IPA /ˈkɹuː.sɪ.bəl/ · frequency rank #21,481*
A cup-shaped piece of laboratory equipment used to contain chemical compounds when heating them to very high temperatures.

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