Which to use
“A3” is a noun and “an” is an article - they look or sound alike but fill different roles in a sentence.
- #19,748
- “A3” frequency rank
- #30
- “an” frequency rank
- 19778
- confusion score
Side-by-Side Comparison
| Feature | A3 | an |
|---|---|---|
| Definition | A one-page document, often tabular or graphical, on such paper. | Form of a (all article senses). |
Letter map: A3 vs an
Shared letters muted; letters that set A3 and an apart highlighted. Shared run: 1.
Role in the sentence - A3 and an
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: A3 is anoun and ananarticle. On the page they differ by a single letter - 3 in “A3” becomes n in “an”. Our composite confusion score for this pair is 19778, derived from the frequency rank of both members and their visual similarity.
A3 is recorded at frequency rank #19,748, classified as anoun. an is at rank #30, tagged as anarticle, pronounced /ˈæn/.
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 19778, this pair ranks #435,781 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of A3 vs an
Shared letters: a. Private to "A3": -. Private to "an": n.
"A3" · 1 letters · shape V · "an" · 2 letters · shape VC
Frequently Asked Questions
Can "A3" and "an" be used interchangeably?
Frequency check: "A3" vs "an" - which ranks higher?
What to do next
You've compared "A3" and "an". Here's where to go from here.
- Full dictionary entry for "A3" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "an" - compare definitions side by side with the headword page. Word entry
- This pair ranks #435,781 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "A3" and "an" also get mixed up with nearby pairs, the highest-scored neighbour is "A3 vs amb". Nearby pair
Confusion rank #435,781 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.