athvsaurWhich spelling fits?

Quick tell: ath is a article, aur is a noun, so they fill different roles in a sentence.

Which to use

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

#31,830
“ath” frequency rank
#49,504
“aur” frequency rank
81334
confusion score

Side-by-Side Comparison

Feature ath aur
Definition Contraction de la préposition a et de l'article défini eth. Or. Élément chimique de numéro atomique 79 et de symbole Au qui fait partie des métaux de transition.

Where the eye mixes ath and aur

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
ath
3 ch
aur

Look-alike desk: ath vs aur

These two trip readers on the page rather than in the ear: ath is \at\ while aur is \ˈawɾ\. 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 (article vs noun), which is usually the fastest check. Our composite confusion score for this pair is 81334, derived from the frequency rank of both members and their visual similarity.

ath is recorded at frequency rank #31,830, classified as anarticle, pronounced \at\. aur is at rank #49,504, tagged as anoun, pronounced \ˈawɾ\.

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 81334, this pair ranks #18,978 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of ath vs aur

Shared letters: a. Private to "ath": ht. Private to "aur": ru.

"ath" · 3 letters · shape VCC  ·  "aur" · 3 letters · shape VVC

Frequently Asked Questions

Can "ath" and "aur" be used interchangeably?
No - they are not even the same part of speech. "ath" is an article and "aur" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "ath" or "aur"?
"ath" is the more common of the two: it sits at frequency rank #31,830 in our French list, against #49,504 for "aur". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "ath" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "aur" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #18,978 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "ath" and "aur" also get mixed up with nearby pairs, the highest-scored neighbour is "Ahn vs aur". Nearby pair

Confusion rank #18,978 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