# arc vs arm

> English confusable word pair

## The two words

### arc
*noun · IPA /ɑːk/ · frequency rank #5,005*
That part of a circle which a heavenly body appears to pass through as it moves above and below the horizon.

### arm
*noun · IPA /ɑːm/ · frequency rank #1,887*
The portion of the upper human appendage, from the shoulder to the wrist and sometimes including the hand.

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