auravsauxWhat's the difference?

Quick tell: aura is a noun, aux is an article, so they fill different roles in a sentence.

Which to use

“aura” is a noun and “aux” is an article - they look or sound alike but fill different roles in a sentence.

#364
“aura” frequency rank
#58
“aux” frequency rank
422
confusion score

Side-by-Side Comparison

Feature aura aux
Definition 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. Contraction obligatoire de la préposition à et de l'article défini les.

Where the eye mixes aura and aux

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
aura
3 ch
aux

Why the eye confuses aura with aux

These two trip readers on the page rather than in the ear: aura is \o.ʁa\ while aux is \o\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs article), which is usually the fastest check. Our composite confusion score for this pair is 422, derived from the frequency rank of both members and their visual similarity.

aura is recorded at frequency rank #364, classified as anoun, pronounced \o.ʁa\. aux is at rank #58, tagged as anarticle, pronounced \o\.

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 422, this pair ranks #439,667 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of aura vs aux

Shared letters: au. Private to "aura": r. Private to "aux": x.

"aura" · 4 letters · shape VVCV  ·  "aux" · 3 letters · shape VVC

Known mistypes of this pair

  • auraarua · auar · aurra · uara

Frequently Asked Questions

Can "aura" and "aux" be used interchangeably?
No - they are not even the same part of speech. "aura" is a noun and "aux" an article, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "aura" or "aux" show up more?
"aux" is the more common of the two: it sits at frequency rank #58 in our French list, against #364 for "aura". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

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 "aura" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "aux" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #439,667 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "aura" and "aux" 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 #439,667 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list