radiovsrasoTell them apart

Quick tell: radio is a noun, raso is an adjective, so they fill different roles in a sentence.

Which to use

“radio” is a noun and “raso” is an adjective - they look or sound alike but fill different roles in a sentence.

#833
“radio” frequency rank
#23,915
“raso” frequency rank
24748
confusion score

Side-by-Side Comparison

Feature radio raso
Definition Segmento de recta que tiene por extremos el punto centro y un punto cualquiera de la circunferencia. Plano, llano.

Where the eye mixes radio and raso

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

5 ch
radio
4 ch
raso

Visual trap between radio and raso

These two trip readers on the page rather than in the ear: radio is [ˈrað̞jo] while raso is [ˈraso]. 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 (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 24748, derived from the frequency rank of both members and their visual similarity.

radio is recorded at frequency rank #833, classified as anoun, pronounced [ˈrað̞jo]. raso is at rank #23,915, tagged as anadj, pronounced [ˈraso].

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 24748, this pair ranks #239,682 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of radio vs raso

Shared letters: aor. Private to "radio": di. Private to "raso": s.

"radio" · 5 letters · shape CVCVV  ·  "raso" · 4 letters · shape CVCV

Known mistypes of this pair

  • radioardio · raddio · radoi · raido · rdaio · rradio
  • rasorasso · rraso · rsao

Frequently Asked Questions

Can "radio" and "raso" be used interchangeably?
No - they are not even the same part of speech. "radio" is a noun and "raso" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "radio" or "raso" show up more?
"radio" is the more common of the two: it sits at frequency rank #833 in our Spanish list, against #23,915 for "raso". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

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

  • Full dictionary entry for "radio" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "raso" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #239,682 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "radio" and "raso" also get mixed up with nearby pairs, the highest-scored neighbour is "raso vs rasta". 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 #239,682 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