regidovsruidoTell them apart

Quick tell: regido is a verb, ruido is a noun, so they fill different roles in a sentence.

Which to use

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

#32,844
“regido” frequency rank
#2,317
“ruido” frequency rank
35161
confusion score

Side-by-Side Comparison

Feature regido ruido
Definition Participio de regir. Sonido, en especial el que es fuerte y desagradable.

Where the eye mixes regido and ruido

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. regido runs 6 letters (CVCVCV) against ruido's 5 (CVVCV) - the length gap alone is often enough to separate them once you know to check it.

6 ch
regido
5 ch
ruido

Why the eye confuses regido with ruido

These two trip readers on the page rather than in the ear: regido is [reˈxið̞o] while ruido is [ˈrwið̞o]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 35161, derived from the frequency rank of both members and their visual similarity.

regido is recorded at frequency rank #32,844, classified as averb, pronounced [reˈxið̞o]. ruido is at rank #2,317, tagged as anoun, pronounced [ˈrwið̞o].

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 35161, this pair ranks #187,577 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of regido vs ruido

Shared letters: dior. Private to "regido": eg. Private to "ruido": u.

"regido" · 6 letters · shape CVCVCV  ·  "ruido" · 5 letters · shape CVVCV

Known mistypes of this pair

  • regido ← ergido · regdio · reggido · regiddo · regiod · reigdo · rgeido · rregido
  • ruido ← riudo · rruido · rudio · ruiddo · ruiod · urido

Frequently Asked Questions

Can "regido" and "ruido" be used interchangeably?
No - they are not even the same part of speech. "regido" is a verb and "ruido" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "regido" or "ruido"?
"ruido" is the more common of the two: it sits at frequency rank #2,317 in our Spanish list, against #32,844 for "regido". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

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 "regido" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ruido" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #187,577 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "regido" and "ruido" also get mixed up with nearby pairs, the highest-scored neighbour is "regado vs regido". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #187,577 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list