# one vs oo

> English confusable word pair

## The two words

### one
*num · IPA /wʌn/ · frequency rank #38*
The number represented by the Arabic numeral 1; the numerical value equal to that cardinal number.

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

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