Rad vs run, What's the Difference?

Which to use

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

#35,306
“Rad” frequency rank: #8,681
“run” frequency rank: 43987
confusion score

Side-by-Side Comparison

Feature	Rad	run
Definition	roda	correr

Where the eye mixes Rad and run

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

3 ch

Rad

3 ch

run

Visual trap between Rad and run

These two trip readers on the page rather than in the ear: Rad is /ˈraːt/ while run is /ˈɹʌn/. 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 verb), which is usually the fastest check. Our composite confusion score for this pair is 43987, derived from the frequency rank of both members and their visual similarity.

Rad is recorded at frequency rank #35,306, classified as anoun, pronounced /ˈraːt/. run is at rank #8,681, tagged as averb, pronounced /ˈɹʌn/.

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 43987, this pair ranks #21,576 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Rad vs run

Shared letters: r. Private to "Rad": ad. Private to "run": nu.

"Rad" · 3 letters · shape CVC · "run" · 3 letters · shape CVC

Frequently Asked Questions

Is swapping "Rad" for "run" ever safe?

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

Which is more common, "Rad" or "run"?

"run" is the more common of the two: it sits at frequency rank #8,681 in our Portuguese list, against #35,306 for "Rad". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

Full dictionary entry for "Rad" 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 #21,576 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"Rad" and "run" also get mixed up with nearby pairs, the highest-scored neighbour is "rabi vs Rad". Nearby pair

Confusion rank #21,576 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.