aliásvsaviãoWhich spelling fits?

Quick tell: aliás is a adverb, avião is a noun, so they fill different roles in a sentence.

Which to use

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

#2,661
“aliás” frequency rank
#2,262
“avião” frequency rank
4923
confusion score

Side-by-Side Comparison

Feature aliás avião
Definition de outra maneira aparelho mais pesado que o ar empregado em navegação aérea

Letter map: aliás vs avião

Shared letters muted; letters that set aliás and avião apart highlighted. Shared run: 2.

5 ch
aliás
5 ch
avião

Grammar separator: aliás vs avião

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: aliás is anadverb and aviãoanoun. On the page they share most of their letters but differ in 3 positions. Our composite confusion score for this pair is 4923, derived from the frequency rank of both members and their visual similarity.

aliás is recorded at frequency rank #2,661, classified as anadv. avião is at rank #2,262, 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 4923, this pair ranks #69,810 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of aliás vs avião

Shared letters: ai. Private to "aliás": lsá. Private to "avião": ovã.

"aliás" · 5 letters · shape VCVVC  ·  "avião" · 5 letters · shape VCVVV

Frequently Asked Questions

Is swapping "aliás" for "avião" ever safe?
No - they are not even the same part of speech. "aliás" is an adverb and "avião" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "aliás" or "avião" show up more?
"avião" is the more common of the two: it sits at frequency rank #2,262 in our Portuguese list, against #2,661 for "aliás". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

You've compared "aliás" and "avião". Here's where to go from here.

  • Full dictionary entry for "aliás" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "avião" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #69,810 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "aliás" and "avião" also get mixed up with nearby pairs, the highest-scored neighbour is "aliás vs alles". Nearby pair

Confusion rank #69,810 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