Which to use
“ost” is a noun and “OUA” is a name - they look or sound alike but fill different roles in a sentence.
- #19,617
- “ost” frequency rank
- #44,080
- “OUA” frequency rank
- 63697
- confusion score
Side-by-Side Comparison
| Feature | ost | OUA |
|---|---|---|
| Definition | ou Armée au Moyen Âge. | Organisation de l'unité africaine : organisation inter-étatique, ayant précédé l’Union africaine. |
Where the eye mixes ost and OUA
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between ost and OUA
These two trip readers on the page rather than in the ear: ost is \ɔst\ while OUA is \o.y.a\. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs name), which is usually the fastest check. Our composite confusion score for this pair is 63697, derived from the frequency rank of both members and their visual similarity.
ost is recorded at frequency rank #19,617, classified as anoun, pronounced \ɔst\. OUA is at rank #44,080, tagged as aname, pronounced \o.y.a\.
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 63697, this pair ranks #80,653 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of ost vs OUA
Shared letters: o. Private to "ost": st. Private to "OUA": au.
"ost" · 3 letters · shape VCC · "OUA" · 3 letters · shape VVV
Frequently Asked Questions
Can "ost" and "OUA" be used interchangeably?
Which is more common, "ost" or "OUA"?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "ost" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "OUA" - compare definitions side by side with the headword page. Word entry
- This pair ranks #80,653 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "ost" and "OUA" also get mixed up with nearby pairs, the highest-scored neighbour is "och vs OUA". Nearby pair
Confusion rank #80,653 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.