# obs vs of

> English confusable word pair

## The two words

### obs
*noun · frequency rank #34,614*
Police observation.

### of
*preposition · IPA /ɒv/ · frequency rank #4*
Expressing distance or motion.

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