# catalysis vs catalyst

> English confusable word pair

## The two words

### catalysis
*noun · IPA /kəˈtæləsɪs/ · frequency rank #42,052*
The increase of the rate of a chemical reaction, induced by a catalyst.

### catalyst
*noun · IPA /ˈkæt.ɪ.lɪst/ · frequency rank #10,177*
A substance that increases the rate of a chemical reaction without being consumed in the process.

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