Which to use
“a1” is an adjective and “av” is a verb - they look or sound alike but fill different roles in a sentence.
- #12,173
- “a1” frequency rank
- #12,373
- “av” frequency rank
- 24546
- confusion score
Side-by-Side Comparison
| Feature | a1 | av |
|---|---|---|
| Definition | first rate or excellent | have |
Letter map: a1 vs av
Shared letters muted; letters that set a1 and av apart highlighted. Shared run: 1.
Part-of-speech tell for a1 / av
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: a1 is anadjective and avaverb. On the page they differ by a single letter - 1 in “a1” becomes v in “av”. Our composite confusion score for this pair is 24546, derived from the frequency rank of both members and their visual similarity.
a1 is recorded at frequency rank #12,173, classified as anadj. av is at rank #12,373, tagged as averb.
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 24546, this pair ranks #401,144 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of a1 vs av
Shared letters: a. Private to "a1": -. Private to "av": v.
"a1" · 1 letters · shape V · "av" · 2 letters · shape VC
Frequently Asked Questions
Can "a1" and "av" be used interchangeably?
Frequency check: "a1" vs "av" - which ranks higher?
What to do next
Pair "a1" vs "av" is on the table, pick a follow-up below.
- Full dictionary entry for "a1" 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 #401,144 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "a1" and "av" also get mixed up with nearby pairs, the highest-scored neighbour is "amb vs av". Nearby pair
Confusion rank #401,144 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.