Aar vs AZ, What's the Difference?

Which to use

“Aar” and “AZ” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#45,768
“Aar” frequency rank: #11,504
“AZ” frequency rank: 57272
confusion score

Side-by-Side Comparison

Feature	Aar	AZ
Definition	A river in Switzerland, flowing 292 km from the glaciers of the Bernese Alps into the Rhine at Koblenz, on the Swiss–German border.	Abbreviation of Arizona: a state of the United States.

Letter map: Aar vs AZ

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

3 ch

Aar

2 ch

Corpus notes: Aar and AZ

Aar and AZ are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 57272, derived from the frequency rank of both members and their visual similarity.

Aar is recorded at frequency rank #45,768, classified as aname, pronounced /ɑɹ/. 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 57272, this pair ranks #120,470 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of Aar vs AZ

Shared letters: a. Private to "Aar": r. Private to "AZ": z.

"Aar" · 3 letters · shape VVC · "AZ" · 2 letters · shape VC

Frequently Asked Questions

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

No. They differ by 1 letter(s) in length, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.

Frequency check: "Aar" 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 #45,768 for "Aar". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pair "Aar" vs "AZ" is on the table, pick a follow-up below.

Full dictionary entry for "Aar" 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 #120,470 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"Aar" and "AZ" also get mixed up with nearby pairs, the highest-scored neighbour is "Aar vs amb". Nearby pair

Confusion rank #120,470 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.