ab vs av, What's the Difference?

Which to use

“ab” and “av” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#9,951
“ab” frequency rank: #4,732
“av” frequency rank: 14683
confusion score

Side-by-Side Comparison

Feature	ab	av
Definition	ou (académique) Onzième mois du calendrier hébreu.	Onzième mois du calendrier hébraïque.

Same sound, different letters: ab vs av

Muted letters are shared; highlighted letters are the only spelling cue when pronunciation matches. Shared run: 1 letter.

2 ch

Same sound, different spelling - ab / av

This is the hard kind. ab and av are pronounced identically (\av\) and both work as anoun. Neither the ear nor the grammar will rescue you; only the meaning does, so the glosses below are the whole decision. They differ by a single letter - b in “ab” becomes v in “av”. Our composite confusion score for this pair is 14683, derived from the frequency rank of both members and their visual similarity.

ab is recorded at frequency rank #9,951, classified as anoun, pronounced \av\. av is at rank #4,732, tagged as anoun, pronounced \av\.

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 14683, this pair ranks #395,636 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of ab vs av

Shared letters: a. Private to "ab": b. Private to "av": v.

"ab" · 2 letters · shape VC · "av" · 2 letters · shape VC

Frequently Asked Questions

Can "ab" and "av" be used interchangeably?

No. They are pronounced the same (\av\), which is exactly why they get swapped in writing, but the dictionary meanings above are different, and pronunciation is no guide here.

Which is more common, "ab" or "av"?

"av" is the more common of the two: it sits at frequency rank #4,732 in our French list, against #9,951 for "ab". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Sound matches; spelling doesn't. Use the exits below to lock the right form or check a cousin pair.

Full dictionary entry for "ab" 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 #395,636 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
"ab" and "av" also get mixed up with nearby pairs, the highest-scored neighbour is "ab vs aur". Nearby pair

Confusion rank #395,636 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.