# notation vs notion

> English confusable word pair

## The two words

### notation
*noun · IPA /noʊˈteɪʃən/ · frequency rank #15,669*
The act, process, method, or an instance of representing by a system or set of marks, signs, figures, or characters.

### notion
*noun · IPA /ˈnəʊʃən/ · frequency rank #5,441*
Mental apprehension of whatever may be known, thought, or imagined; idea, concept.

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