OH vs oz, What's the Difference?

Which to use

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

#359
“OH” frequency rank: #7,037
“oz” frequency rank: 7396
confusion score

Side-by-Side Comparison

Feature	OH	oz
Definition	Initialism of other half: a husband, wife, partner, etc.	Abbreviation of ounce; any of various units of weight and volume.

Letter map: OH vs oz

Shared letters muted; letters that set OH and oz apart highlighted. Shared run: 1.

2 ch

Pair insight - OH / oz

OH and oz 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 a single letter - h in “OH” becomes z in “oz”. Our composite confusion score for this pair is 7396, derived from the frequency rank of both members and their visual similarity.

OH is recorded at frequency rank #359, classified as anoun. oz is at rank #7,037, tagged as anoun, pronounced /aʊns/.

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 7396, this pair ranks #507,290 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of OH vs oz

Shared letters: o. Private to "OH": h. Private to "oz": z.

"OH" · 2 letters · shape VC · "oz" · 2 letters · shape VC

Frequently Asked Questions

Is swapping "OH" for "oz" ever safe?

No. They differ by a single letter - h in “OH” becomes z in “oz”, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.

In ordinary English text, does "OH" or "oz" show up more?

"OH" is the more common of the two: it sits at frequency rank #359 in our English list, against #7,037 for "oz". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

You've compared "OH" and "oz". Here's where to go from here.

Full dictionary entry for "OH" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "oz" - compare definitions side by side with the headword page. Word entry
This pair ranks #507,290 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"OH" and "oz" also get mixed up with nearby pairs, the highest-scored neighbour is "omi vs oz". Nearby pair

Confusion rank #507,290 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.