# planar vs plane

> English confusable word pair

## The two words

### planar
*adjective · IPA /ˈpleɪnɚ/ · frequency rank #26,553*
Of or pertaining to a plane.

### plane
*adjective · IPA /pleɪn/ · frequency rank #1,958*
Of a surface: flat or level.

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