red vs run, What's the Difference?

Which to use

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

#3,284
“red” frequency rank: #8,681
“run” frequency rank: 11965
confusion score

Side-by-Side Comparison

Feature	red	run
Definition	vermelho, encarnado	correr

Where the eye mixes red and run

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

3 ch

red

3 ch

run

Why the eye confuses red with run

These two trip readers on the page rather than in the ear: red is /red/ 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 (adjective vs verb), which is usually the fastest check. Our composite confusion score for this pair is 11965, derived from the frequency rank of both members and their visual similarity.

red is recorded at frequency rank #3,284, classified as anadj, pronounced /red/. 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 11965, this pair ranks #60,755 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of red vs run

Shared letters: r. Private to "red": de. Private to "run": nu.

"red" · 3 letters · shape CVC · "run" · 3 letters · shape CVC

Frequently Asked Questions

Can "red" and "run" be used interchangeably?

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

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

"red" is the more common of the two: it sits at frequency rank #3,284 in our Portuguese list, against #8,681 for "run". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

Full dictionary entry for "red" 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 #60,755 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"red" and "run" also get mixed up with nearby pairs, the highest-scored neighbour is "run vs rust". Nearby pair

Confusion rank #60,755 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.