# clay vs coal

> English confusable word pair

## The two words

### clay
*noun · IPA /kleɪ/ · frequency rank #4,358*
A mineral substance made up of small crystals of silica and alumina, that is ductile when moist; the material of pre-fired ceramics.

### coal
*noun · IPA /kəʊl/ · frequency rank #3,048*
A black or brownish black rock formed from prehistoric plant remains, composed largely of carbon and burned as a fuel.

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