A vs AZ, What's the Difference?

Which to use

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

#5
“A” frequency rank: #11,504
“AZ” frequency rank: 11509
confusion score

Side-by-Side Comparison

Feature	A	AZ
Definition	The first letter of the English alphabet, called a and written in the Latin script.	Abbreviation of Arizona: a state of the United States.

Letter map: A vs AZ

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

1 ch

2 ch

Part-of-speech tell for A / AZ

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: A is acharacter and AZaname. On the page they differ by 1 extra letter(s) - “A” sits inside “AZ”. Our composite confusion score for this pair is 11509, derived from the frequency rank of both members and their visual similarity.

A is recorded at frequency rank #5, classified as acharacter, pronounced /eɪ̯/. 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 11509, this pair ranks #486,643 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of A vs AZ

Shared letters: a. Private to "A": -. Private to "AZ": z.

"A" · 1 letters · shape V · "AZ" · 2 letters · shape VC

Frequently Asked Questions

Is swapping "A" for "AZ" ever safe?

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

Frequency check: "A" vs "AZ" - which ranks higher?

"A" is the more common of the two: it sits at frequency rank #5 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

Done with this confusable. These links stay specific to "A" and "AZ".

Full dictionary entry for "A" 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 #486,643 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"A" and "AZ" also get mixed up with nearby pairs, the highest-scored neighbour is "amb vs AZ". Nearby pair

Confusion rank #486,643 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.