an vs AZ, What's the Difference?

Which to use

“an” is an article and “AZ” is a name - they look or sound alike but fill different roles in a sentence.

#30
“an” frequency rank: #11,504
“AZ” frequency rank: 11534
confusion score

Side-by-Side Comparison

Feature	an	AZ
Definition	Form of a (all article senses).	Abbreviation of Arizona: a state of the United States.

Letter map: an vs AZ

Shared letters muted; letters that set an and AZ apart highlighted. Shared run: 1.

2 ch

Grammar separator: an vs AZ

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: an is anarticle and AZaname. On the page they differ by a single letter - n in “an” becomes z in “AZ”. Our composite confusion score for this pair is 11534, derived from the frequency rank of both members and their visual similarity.

an is recorded at frequency rank #30, classified as anarticle, pronounced /ˈæn/. AZ is at rank #11,504, tagged as aname.

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 11534, this pair ranks #486,481 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of an vs AZ

Shared letters: a. Private to "an": n. Private to "AZ": z.

"an" · 2 letters · shape VC · "AZ" · 2 letters · shape VC

Frequently Asked Questions

Can "an" and "AZ" be used interchangeably?

No - they are not even the same part of speech. "an" is an article and "AZ" a name, so a sentence built for one is usually ungrammatical with the other.

In ordinary English text, does "an" or "AZ" show up more?

"an" is the more common of the two: it sits at frequency rank #30 in our English list, against #11,504 for "AZ". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

You've compared "an" and "AZ". Here's where to go from here.

Full dictionary entry for "an" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "AZ" - compare definitions side by side with the headword page. Word entry
This pair ranks #486,481 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"an" and "AZ" also get mixed up with nearby pairs, the highest-scored neighbour is "amb vs AZ". Nearby pair

Confusion rank #486,481 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.