Which to use
“iso” is a noun and “Ius” is a name - they look or sound alike but fill different roles in a sentence.
- #12,180
- “iso” frequency rank
- #43,081
- “Ius” frequency rank
- 55261
- confusion score
Side-by-Side Comparison
| Feature | iso | Ius |
|---|---|---|
| Definition | Cielo | Apellido. |
Where the eye mixes iso and Ius
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Look-alike desk: iso vs Ius
These two trip readers on the page rather than in the ear: iso is /ìsó/ while Ius is [ˈjus]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs name), which is usually the fastest check. Our composite confusion score for this pair is 55261, derived from the frequency rank of both members and their visual similarity.
iso is recorded at frequency rank #12,180, classified as anoun, pronounced /ìsó/. Ius is at rank #43,081, tagged as aname, pronounced [ˈjus].
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 55261, this pair ranks #79,686 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of iso vs Ius
Shared letters: is. Private to "iso": o. Private to "Ius": u.
"iso" · 3 letters · shape VCV · "Ius" · 3 letters · shape VVC
Frequently Asked Questions
Do "iso" and "Ius" mean the same thing in a sentence?
Which is more common, "iso" or "Ius"?
What to do next
Eye-level mix-up between "iso" and "Ius" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "iso" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "Ius" - compare definitions side by side with the headword page. Word entry
- This pair ranks #79,686 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "iso" and "Ius" also get mixed up with nearby pairs, the highest-scored neighbour is "Ius vs iza". Nearby pair
Confusion rank #79,686 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.