auvsavWhat's the difference?

Quick tell: au is a intj, av is a noun, so they fill different roles in a sentence.

Which to use

“au” is an intj and “av” is a noun - they look or sound alike but fill different roles in a sentence.

#7,821
“au” frequency rank
#4,858
“av” frequency rank
12679
confusion score

Side-by-Side Comparison

Feature au av
Definition Indica dolor. Decimoprimer mes del calendario hebreo, de 30 días de duración. La conmemoración de Tishá Beav tiene lugar en este mes.

Where the eye mixes au and av

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

2 ch
au
2 ch
av

Look-alike desk: au vs av

These two trip readers on the page rather than in the ear: au is [ˈaw] while av is [ˈaβ̞]. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - u in “au” becomes v in “av”, and the parts of speech differ too (intj vs noun), which is usually the fastest check. Our composite confusion score for this pair is 12679, derived from the frequency rank of both members and their visual similarity.

au is recorded at frequency rank #7,821, classified as anintj, pronounced [ˈaw]. av is at rank #4,858, tagged as anoun, pronounced [ˈaβ̞].

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 12679, this pair ranks #290,653 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of au vs av

Shared letters: a. Private to "au": u. Private to "av": v.

"au" · 2 letters · shape VV  ·  "av" · 2 letters · shape VC

Frequently Asked Questions

Can "au" and "av" be used interchangeably?
No - they are not even the same part of speech. "au" is an intj and "av" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "au" or "av"?
"av" is the more common of the two: it sits at frequency rank #4,858 in our Spanish list, against #7,821 for "au". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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 "av" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #290,653 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "au" and "av" also get mixed up with nearby pairs, the highest-scored neighbour is "atl vs au". Nearby pair

Confusion rank #290,653 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list