ifvsíonWhat's the difference?

Quick tell: if is a conjunction, íon is a noun, so they fill different roles in a sentence.

Which to use

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

#5,207
“if” frequency rank
#44,174
“íon” frequency rank
49381
confusion score

Side-by-Side Comparison

Feature if íon
Definition equivalente à conjunção se espécie química eletricamente carregada, geralmente um átomo ou molécula que perdeu ou ganhou elétrons

Letter map: if vs íon

Shared letters muted; letters that set if and íon apart highlighted. No shared letter run.

2 ch
if
3 ch
íon

Part-of-speech tell for if / íon

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: if is aconjunction and íonanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 49381, derived from the frequency rank of both members and their visual similarity.

if is recorded at frequency rank #5,207, classified as aconj, pronounced /ɪf/. 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 49381, this pair ranks #15,641 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of if vs íon

Shared letters: none. Private to "if": fi. Private to "íon": noí.

"if" · 2 letters · shape VC  ·  "íon" · 3 letters · shape VVC

Frequently Asked Questions

Is swapping "if" for "íon" ever safe?
No - they are not even the same part of speech. "if" is a conjunction and "íon" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "if" or "íon" show up more?
"if" is the more common of the two: it sits at frequency rank #5,207 in our Portuguese list, against #44,174 for "íon". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Done with this confusable. These links stay specific to "if" and "íon".

  • Full dictionary entry for "if" 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 #15,641 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "if" and "íon" also get mixed up with nearby pairs, the highest-scored neighbour is "ino vs íon". Nearby pair

Confusion rank #15,641 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