# op vs ost

> French confusable word pair

## The two words

### op
*preposition · IPA \ɔp\ · frequency rank #2,889*
Sur.

### ost
*noun · IPA \ɔst\ · frequency rank #19,617*
ou Armée au Moyen Âge.

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