# ob vs oz

> English confusable word pair

## The two words

### ob
*noun · IPA /ɒb/ · frequency rank #16,547*
a halfpenny

### oz
*noun · IPA /aʊns/ · frequency rank #7,037*
Abbreviation of ounce; any of various units of weight and volume.

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