# Mach vs macOS

> English confusable word pair

## The two words

### Mach
*name · IPA /mɑːk/ · frequency rank #20,990*
A surname from Czech.

### macOS
*name · IPA /ˌmækoʊˈɛs/ · frequency rank #28,283*
A major operating system, formerly known as OS X (and before that as Mac OS X), used on laptop and desktop computers by Apple Inc.

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