io vs Irão, What's the Difference?

Which to use

“io” is an adverb and “Irão” is a noun - they look or sound alike but fill different roles in a sentence.

#18,900
“io” frequency rank: #1,785
“Irão” frequency rank: 20685
confusion score

Side-by-Side Comparison

Feature	io	Irão
Definition	sempre	país do Oriente Médio, com nome oficial de República Islâmica do Irão, tem fronteiras com a Armênia, Azerbaijão, Turquemenistão, Afeganistão, Paquistão, Iraque e Turquia, é banhado ao norte pelo mar Cáspio, ao sul pelo golfo de Omã e ao sudoeste pelo golfo Pérsico, sua capital é Teerão

Letter map: io vs Irão

Shared letters muted; letters that set io and Irão apart highlighted. Shared run: 2. io runs 2 letters (VV) against Irão's 4 (VCVV) - the length gap alone is often enough to separate them once you know to check it.

2 ch

4 ch

Irão

Role in the sentence - io and Irão

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: io is anadverb and Irãoanoun. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 20685, derived from the frequency rank of both members and their visual similarity.

io is recorded at frequency rank #18,900, classified as anadv, pronounced /ˈi.o/, /ˈi.ɔ/. Irão is at rank #1,785, 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 20685, this pair ranks #49,758 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of io vs Irão

Shared letters: io. Private to "io": -. Private to "Irão": rã.

"io" · 2 letters · shape VV · "Irão" · 4 letters · shape VCVV

Frequently Asked Questions

Can "io" and "Irão" be used interchangeably?

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

Which is more common, "io" or "Irão"?

"Irão" is the more common of the two: it sits at frequency rank #1,785 in our Portuguese list, against #18,900 for "io". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

You've compared "io" and "Irão". Here's where to go from here.

Full dictionary entry for "io" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "Irão" - compare definitions side by side with the headword page. Word entry
This pair ranks #49,758 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"io" and "Irão" also get mixed up with nearby pairs, the highest-scored neighbour is "ino vs io". Nearby pair

Confusion rank #49,758 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.