Which to use
“os” is a pronoun and “oz” is an abbrev - they look or sound alike but fill different roles in a sentence.
- #449
- “os” frequency rank
- #16,661
- “oz” frequency rank
- 17110
- confusion score
Side-by-Side Comparison
| Feature | os | oz |
|---|---|---|
| Definition | Caso acusativo y dativo del pronombre personal vosotros, una de las formas de la segunda persona del plural en español. | Abreviatura de ounce ('onza'). |
Where the eye mixes os and oz
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Look-alike desk: os vs oz
These two trip readers on the page rather than in the ear: os is [os] while oz is /aʊns/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - s in “os” becomes z in “oz”, and the parts of speech differ too (pronoun vs abbrev), which is usually the fastest check. Our composite confusion score for this pair is 17110, derived from the frequency rank of both members and their visual similarity.
os is recorded at frequency rank #449, classified as apron, pronounced [os]. oz is at rank #16,661, tagged as anabbrev, 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 17110, this pair ranks #273,513 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of os vs oz
Shared letters: o. Private to "os": s. Private to "oz": z.
"os" · 2 letters · shape VC · "oz" · 2 letters · shape VC
Frequently Asked Questions
Is swapping "os" for "oz" ever safe?
In ordinary Spanish text, does "os" or "oz" show up more?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "os" 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 #273,513 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "os" and "oz" also get mixed up with nearby pairs, the highest-scored neighbour is "ome vs oz". Nearby pair
Confusion rank #273,513 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.