# ohm vs oo

> English confusable word pair

## The two words

### ohm
*noun · IPA /əʊm/ · frequency rank #28,649*
In the International System of Units, the derived unit of electrical resistance; the electrical resistance of a device across which a potential difference of one volt causes a current of one ampere.

### oo
*noun · frequency rank #13,572*
(Ω, ω) The Greek letter omega.

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