ioiô vs íon, What's the Difference?

Which to use

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

#48,990
“ioiô” frequency rank: #44,174
“íon” frequency rank: 93164
confusion score

Side-by-Side Comparison

Feature	ioiô	íon
Definition	que se começa, se para e se volta a fazer	espécie química eletricamente carregada, geralmente um átomo ou molécula que perdeu ou ganhou elétrons

Letter map: ioiô vs íon

Shared letters muted; letters that set ioiô and íon apart highlighted. Shared run: 1. ioiô runs 4 letters (VVVV) against íon's 3 (VVC) - the length gap alone is often enough to separate them once you know to check it.

4 ch

ioiô

3 ch

íon

Grammar separator: ioiô vs íon

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ioiô is anadjective and íonanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 93164, derived from the frequency rank of both members and their visual similarity.

ioiô is recorded at frequency rank #48,990, classified as anadj. íon is at rank #44,174, tagged as anoun.

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 93164, this pair ranks #140 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of ioiô vs íon

Shared letters: o. Private to "ioiô": iô. Private to "íon": ní.

"ioiô" · 4 letters · shape VVVV · "íon" · 3 letters · shape VVC

Frequently Asked Questions

Can "ioiô" and "íon" be used interchangeably?

No - they are not even the same part of speech. "ioiô" is an adjective and "íon" a noun, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "ioiô" or "íon"?

"íon" is the more common of the two: it sits at frequency rank #44,174 in our Portuguese list, against #48,990 for "ioiô". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

You've compared "ioiô" and "íon". Here's where to go from here.

Full dictionary entry for "ioiô" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "íon" - compare definitions side by side with the headword page. Word entry
This pair ranks #140 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"ioiô" and "íon" also get mixed up with nearby pairs, the highest-scored neighbour is "ino vs ioiô". Nearby pair

Confusion rank #140 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.