ráciovsrápidoWhat's the difference?

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

Which to use

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

#39,370
“rácio” frequency rank
#811
“rápido” frequency rank
40181
confusion score

Side-by-Side Comparison

Feature rácio rápido
Definition relação que anda depressa

Where the spellings diverge

Shared letters are muted; the letters that actually set rácio and rápido apart are highlighted. They share 4 letters in sequence, which is exactly why the eye skips the difference.

5 ch
rácio
6 ch
rápido

Spelling & Dictionary Insight

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: rácio is anoun and rápidoanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 40181, derived from the frequency rank of both members and their visual similarity.

rácio is recorded at frequency rank #39,370, classified as anoun. rápido is at rank #811, tagged as anadj, pronounced /ˈRa.pi.du/.

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 40181, this pair ranks #25,971 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of rácio vs rápido

Shared letters: iorá. Private to "rácio": c. Private to "rápido": dp.

"rácio" · 5 letters · shape CVCVV  ·  "rápido" · 6 letters · shape CVCVCV

Frequency comparison

rácio#39,370
rápido#811

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "rácio" and "rápido" be used interchangeably?
No - they are not even the same part of speech. "rácio" is a noun and "rápido" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "rácio" or "rápido"?
"rápido" is the more common of the two: it sits at frequency rank #811 in our Portuguese list, against #39,370 for "rácio". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Remembering rácio vs rápido

The fastest way to pick the right one every time.

  • Check the role first: if you need a noun, it's “rácio”; for an adjective, it's “rápido”.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “rácio” entry
  • Browse more pairs most likely to be confused. Most confusable

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

Source: FrequencyWords open word-frequency list