Which to use
“AA” is a noun and “an” is an article - they look or sound alike but fill different roles in a sentence.
- #6,979
- “AA” frequency rank
- #30
- “an” frequency rank
- 7009
- confusion score
Side-by-Side Comparison
| Feature | AA | an |
|---|---|---|
| Definition | A member of Alcoholics Anonymous. | Form of a (all article senses). |
Letter map: AA vs an
Shared letters muted; letters that set AA and an apart highlighted. Shared run: 1.
Part-of-speech tell for AA / an
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: AA is anoun and ananarticle. On the page they differ by a single letter - a in “AA” becomes n in “an”. Our composite confusion score for this pair is 7009, derived from the frequency rank of both members and their visual similarity.
AA is recorded at frequency rank #6,979, 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 7009, this pair ranks #508,981 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of AA vs an
Shared letters: a. Private to "AA": -. Private to "an": n.
"AA" · 2 letters · shape VV · "an" · 2 letters · shape VC
Frequently Asked Questions
Do "AA" and "an" mean the same thing in a sentence?
Frequency check: "AA" vs "an" - which ranks higher?
What to do next
Done with this confusable. These links stay specific to "AA" and "an".
- Full dictionary entry for "AA" 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 #508,981 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "AA" and "an" also get mixed up with nearby pairs, the highest-scored neighbour is "AA vs Asta". Nearby pair
Confusion rank #508,981 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.