# radius vs rails

> English confusable word pair

## The two words

### radius
*noun · IPA /ˈɹeɪ.di.əs/ · frequency rank #8,847*
The long bone in the forearm, on the side of the thumb.

### rails
*noun · IPA /ɹeɪlz/ · frequency rank #9,804*
plural of rail

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/vs/radius-vs-rails