Which to use
“ru” is a noun and “ruz” is an adjective - they look or sound alike but fill different roles in a sentence.
- #21,828
- “ru” frequency rank
- #33,326
- “ruz” frequency rank
- 55154
- confusion score
Side-by-Side Comparison
| Feature | ru | ruz |
|---|---|---|
| Definition | Calle. | Rojo. |
Where the eye mixes ru and ruz
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses ru with ruz
These two trip readers on the page rather than in the ear: ru is /ˈryː/ while ruz is [ˈryːs]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 extra letter(s) - “ru” sits inside “ruz”, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 55154, derived from the frequency rank of both members and their visual similarity.
ru is recorded at frequency rank #21,828, classified as anoun, pronounced /ˈryː/. ruz is at rank #33,326, tagged as anadj, pronounced [ˈryːs].
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 55154, this pair ranks #80,168 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of ru vs ruz
Shared letters: ru. Private to "ru": -. Private to "ruz": z.
"ru" · 2 letters · shape CV · "ruz" · 3 letters · shape CVC
Frequently Asked Questions
Is swapping "ru" for "ruz" ever safe?
Frequency check: "ru" vs "ruz" - which ranks higher?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "ru" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ruz" - compare definitions side by side with the headword page. Word entry
- This pair ranks #80,168 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "ru" and "ruz" also get mixed up with nearby pairs, the highest-scored neighbour is "rulo vs ruz". Nearby pair
Confusion rank #80,168 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.