ciovscoinWhich spelling fits?

Which to use

“cio” and “coin” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#22,564
“cio” frequency rank
#41,891
“coin” frequency rank
64455
confusion score

Side-by-Side Comparison

Feature cio coin
Definition período de maior apetite sexual e fertilidade de certos animais plural de cù

Where the eye mixes cio and coin

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. cio runs 3 letters (CVV) against coin's 4 (CVVC) - the length gap alone is often enough to separate them once you know to check it.

3 ch
cio
4 ch
coin

Visual trap between cio and coin

A purely visual mix-up. cio (/ˈsi.u/) and coin (/konʲ/) 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 64455, derived from the frequency rank of both members and their visual similarity.

cio is recorded at frequency rank #22,564, classified as anoun, pronounced /ˈsi.u/. coin is at rank #41,891, tagged as anoun, pronounced /konʲ/.

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 64455, this pair ranks #5,771 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of cio vs coin

Shared letters: cio. Private to "cio": -. Private to "coin": n.

"cio" · 3 letters · shape CVV  ·  "coin" · 4 letters · shape CVVC

Known mistypes of this pair

  • coin ← ccoin · cion · coinn · coni · ocin

Frequently Asked Questions

Do "cio" and "coin" mean the same thing in a sentence?
No. They are said differently (/ˈsi.u/ versus /konʲ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "cio" vs "coin" - which ranks higher?
"cio" is the more common of the two: it sits at frequency rank #22,564 in our Portuguese list, against #41,891 for "coin". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

  • Full dictionary entry for "cio" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "coin" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #5,771 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "cio" and "coin" also get mixed up with nearby pairs, the highest-scored neighbour is "coice vs coin". 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 #5,771 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list