rudavsruidoWhat's the difference?

Which to use

“ruda” and “ruido” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#25,801
“ruda” frequency rank
#2,317
“ruido” frequency rank
28118
confusion score

Side-by-Side Comparison

Feature ruda ruido
Definition (Ruta spp.) Cualquiera de unas 40 especies de plantas herbáceas o arbustivas de la familia de las rutáceas, siempreverdes, de hijas bi- o tripinnadas, correosas, glaucas, flores amarillas tetrámeras o pentámeras formando cimas, y frutos en cápsula. Son intensamente aromáticas y muy amargas, usándose en medicina y gastronomía. Sonido, en especial el que es fuerte y desagradable.

Where the eye mixes ruda and ruido

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

4 ch
ruda
5 ch
ruido

Look-alike desk: ruda vs ruido

A purely visual mix-up. ruda ([ˈruð̞a]) and ruido ([ˈrwið̞o]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 28118, derived from the frequency rank of both members and their visual similarity.

ruda is recorded at frequency rank #25,801, classified as anoun, pronounced [ˈruð̞a]. 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 28118, this pair ranks #223,536 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ruda vs ruido

Shared letters: dru. Private to "ruda": a. Private to "ruido": io.

"ruda" · 4 letters · shape CVCV  ·  "ruido" · 5 letters · shape CVVCV

Known mistypes of this pair

  • rudardua · rruda · ruad · rudda · urda
  • ruidoriudo · rruido · rudio · ruiddo · ruiod · urido

Frequently Asked Questions

Is swapping "ruda" for "ruido" ever safe?
No. They are said differently ([ˈruð̞a] versus [ˈrwið̞o]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "ruda" or "ruido"?
"ruido" is the more common of the two: it sits at frequency rank #2,317 in our Spanish list, against #25,801 for "ruda". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

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

  • Full dictionary entry for "ruda" 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 #223,536 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "ruda" and "ruido" also get mixed up with nearby pairs, the highest-scored neighbour is "riba vs ruda". 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 #223,536 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