# calcite vs calcium

> English confusable word pair

## The two words

### calcite
*noun · IPA /ˈkælˌsaɪt/ · frequency rank #45,830*
A very widely distributed crystalline form of calcium carbonate, CaCO₃, found as limestone, chalk and marble.

### calcium
*noun · IPA /ˈkælsi.əm/ · frequency rank #9,291*
The chemical element with atomic number 20: a soft, silvery-white alkaline earth metal which occurs naturally as carbonate in limestone and as silicate in many rocks.

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