# mainline vs midline

> English confusable word pair

## The two words

### mainline
*adjective · IPA /ˈmeɪnˌlaɪn/ · frequency rank #26,875*
Normal, principal or standard.

### midline
*noun · frequency rank #45,517*
The medial line (or plane) of the body, which divides the body into halves that are mirror-images of each other.

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