Which to use
“au” is an article and “aura” is a noun - they look or sound alike but fill different roles in a sentence.
- #24
- “au” frequency rank
- #364
- “aura” frequency rank
- 388
- confusion score
Side-by-Side Comparison
| Feature | au | aura |
|---|---|---|
| Definition | Contraction de la préposition à et de l'article défini le. | Le « corps subtil », qui entourerait le corps physique. De forme ovoïde, l’aura changerait de couleur selon l’évolution, l’état émotionnel ou de santé du sujet. |
Where the eye mixes au and aura
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses au with aura
These two trip readers on the page rather than in the ear: au is \o\ while aura is \o.ʁa\. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “au” sits inside “aura”, and the parts of speech differ too (article vs noun), which is usually the fastest check. Our composite confusion score for this pair is 388, derived from the frequency rank of both members and their visual similarity.
au is recorded at frequency rank #24, classified as anarticle, pronounced \o\. aura is at rank #364, tagged as anoun, pronounced \o.ʁa\.
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 388, this pair ranks #439,723 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of au vs aura
Shared letters: au. Private to "au": -. Private to "aura": r.
"au" · 2 letters · shape VV · "aura" · 4 letters · shape VVCV
Known mistypes of this pair
- aura ← arua · auar · aurra · uara
Frequently Asked Questions
Is swapping "au" for "aura" ever safe?
In ordinary French text, does "au" or "aura" show up more?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "au" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "aura" - compare definitions side by side with the headword page. Word entry
- This pair ranks #439,723 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "au" and "aura" also get mixed up with nearby pairs, the highest-scored neighbour is "aura vs avéra". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #439,723 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.