Roi vs run, What's the Difference?

Which to use

“Roi” is a name and “run” is a verb - they look or sound alike but fill different roles in a sentence.

#17,465
“Roi” frequency rank: #309
“run” frequency rank: 17774
confusion score

Side-by-Side Comparison

Feature	Roi	run
Definition	Roi islet, Kwajalein atoll, Marshall Islands.	To move swiftly.

Where the eye mixes Roi and run

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch

Roi

3 ch

run

Why the eye confuses Roi with run

These two trip readers on the page rather than in the ear: Roi is /ˈɹɔɪ/ while run is /ɹʌn/. 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 (name vs verb), which is usually the fastest check. Our composite confusion score for this pair is 17774, derived from the frequency rank of both members and their visual similarity.

Roi is recorded at frequency rank #17,465, classified as aname, pronounced /ˈɹɔɪ/. run is at rank #309, tagged as averb, pronounced /ɹʌn/.

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 17774, this pair ranks #449,231 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of Roi vs run

Shared letters: r. Private to "Roi": io. Private to "run": nu.

"Roi" · 3 letters · shape CVV · "run" · 3 letters · shape CVC

Frequently Asked Questions

Do "Roi" and "run" mean the same thing in a sentence?

No - they are not even the same part of speech. "Roi" is a name and "run" a verb, so a sentence built for one is usually ungrammatical with the other.

Frequency check: "Roi" vs "run" - which ranks higher?

"run" is the more common of the two: it sits at frequency rank #309 in our English list, against #17,465 for "Roi". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Eye-level mix-up between "Roi" and "run" is sorted above. Next: full entries or other pairs that share a letter shape.

Full dictionary entry for "Roi" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "run" - compare definitions side by side with the headword page. Word entry
This pair ranks #449,231 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"Roi" and "run" also get mixed up with nearby pairs, the highest-scored neighbour is "Roi vs Rua". Nearby pair

Confusion rank #449,231 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.