at vs AUC, What's the Difference?

Which to use

“at” is a preposition and “AUC” is an adverb - they look or sound alike but fill different roles in a sentence.

#21
“at” frequency rank: #48,600
“AUC” frequency rank: 48621
confusion score

Side-by-Side Comparison

Feature	at	AUC
Definition	In, near, or in the general vicinity of (a particular place).	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: at vs AUC

Shared letters muted; letters that set at and AUC apart highlighted. Shared run: 1.

2 ch

3 ch

AUC

Part-of-speech tell for at / AUC

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: at is apreposition and AUCanadverb. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 48621, derived from the frequency rank of both members and their visual similarity.

at is recorded at frequency rank #21, classified as aprep, pronounced /æt/. 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 48621, this pair ranks #191,315 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of at vs AUC

Shared letters: a. Private to "at": t. Private to "AUC": cu.

"at" · 2 letters · shape VC · "AUC" · 3 letters · shape VVC

Frequently Asked Questions

Do "at" and "AUC" mean the same thing in a sentence?

No - they are not even the same part of speech. "at" is a preposition and "AUC" an adverb, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "at" or "AUC"?

"at" is the more common of the two: it sits at frequency rank #21 in our English list, against #48,600 for "AUC". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Pair "at" vs "AUC" is on the table, pick a follow-up below.

Full dictionary entry for "at" 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 #191,315 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"at" and "AUC" also get mixed up with nearby pairs, the highest-scored neighbour is "amb vs AUC". Nearby pair

Confusion rank #191,315 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.