regiovsRioTell them apart

Quick tell: regio is a noun, Rio is a name, so they fill different roles in a sentence.

Which to use

“regio” is a noun and “Rio” is a name - they look or sound alike but fill different roles in a sentence.

#17,107
“regio” frequency rank
#4,154
“Rio” frequency rank
21261
confusion score

Side-by-Side Comparison

Feature regio Rio
Definition Richtung Kurzform für Rio de Janeiro

Letter map: regio vs Rio

Shared letters muted; letters that set regio and Rio apart highlighted. Shared run: 3.

5 ch
regio
3 ch
Rio

Part-of-speech tell for regio / Rio

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: regio is anoun and Rioaname. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 21261, derived from the frequency rank of both members and their visual similarity.

regio is recorded at frequency rank #17,107, classified as anoun. Rio is at rank #4,154, tagged as aname, pronounced [ˈʁiːo].

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 21261, this pair ranks #1,888,394 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of regio vs Rio

Shared letters: ior. Private to "regio": eg. Private to "Rio": -.

"regio" · 5 letters · shape CVCVV  ·  "Rio" · 3 letters · shape CVV

Known mistypes of this pair

  • regioergio · reggio · regoi · reigo · rgeio · rregio

Frequently Asked Questions

Is swapping "regio" for "Rio" ever safe?
No - they are not even the same part of speech. "regio" is a noun and "Rio" a name, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "regio" vs "Rio" - which ranks higher?
"Rio" is the more common of the two: it sits at frequency rank #4,154 in our German list, against #17,107 for "regio". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pair "regio" vs "Rio" is on the table, pick a follow-up below.

  • Full dictionary entry for "regio" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Rio" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,888,394 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "regio" and "Rio" also get mixed up with nearby pairs, the highest-scored neighbour is "regio vs regst". 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 #1,888,394 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list