APL vs AZ, What's the Difference?

Which to use

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

#48,593
“APL” frequency rank: #11,504
“AZ” frequency rank: 60097
confusion score

Side-by-Side Comparison

Feature	APL	AZ
Definition	Initialism of acute promyelocytic leukemia.	Abbreviation of Arizona: a state of the United States.

Letter map: APL vs AZ

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

3 ch

APL

2 ch

Part-of-speech tell for APL / AZ

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: APL is anoun and AZaname. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 60097, derived from the frequency rank of both members and their visual similarity.

APL is recorded at frequency rank #48,593, classified as anoun. 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 60097, this pair ranks #102,219 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of APL vs AZ

Shared letters: a. Private to "APL": lp. Private to "AZ": z.

"APL" · 3 letters · shape VCC · "AZ" · 2 letters · shape VC

Frequently Asked Questions

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

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

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

"AZ" is the more common of the two: it sits at frequency rank #11,504 in our English list, against #48,593 for "APL". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

Full dictionary entry for "APL" 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 #102,219 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"APL" and "AZ" also get mixed up with nearby pairs, the highest-scored neighbour is "amb vs APL". Nearby pair

Confusion rank #102,219 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.