Which to use
“a's” is a noun and “AUC” is an adverb - they look or sound alike but fill different roles in a sentence.
- #15,090
- “a's” frequency rank
- #48,600
- “AUC” frequency rank
- 63690
- confusion score
Side-by-Side Comparison
| Feature | a's | AUC |
|---|---|---|
| Definition | plural of the letter a | According to the Roman era, which reckons the number of years passed from the foundation of the city of Rome by Romulus, now usually taken as 753 bc. |
Letter map: a's vs AUC
Shared letters muted; letters that set a's and AUC apart highlighted. Shared run: 1.
Grammar separator: a's vs AUC
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: a's is anoun and AUCanadverb. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 63690, derived from the frequency rank of both members and their visual similarity.
a's is recorded at frequency rank #15,090, classified as anoun, pronounced /ˈeɪz/. AUC is at rank #48,600, tagged as anadv.
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 63690, this pair ranks #81,581 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of a's vs AUC
Shared letters: a. Private to "a's": s. Private to "AUC": cu.
"a's" · 2 letters · shape VC · "AUC" · 3 letters · shape VVC
Frequently Asked Questions
Do "a's" and "AUC" mean the same thing in a sentence?
Which is more common, "a's" or "AUC"?
Useful next steps
Done with this confusable. These links stay specific to "a's" and "AUC".
- Full dictionary entry for "a's" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "AUC" - compare definitions side by side with the headword page. Word entry
- This pair ranks #81,581 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "a's" and "AUC" also get mixed up with nearby pairs, the highest-scored neighbour is "amb vs AUC". Nearby pair
Confusion rank #81,581 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.