onionvsonoWhich spelling fits?

Quick tell: onion is a noun, ono is a pronoun, so they fill different roles in a sentence.

Which to use

“onion” is a noun and “ono” is a pronoun - they look or sound alike but fill different roles in a sentence.

#45,507
“onion” frequency rank
#37,444
“ono” frequency rank
82951
confusion score

Side-by-Side Comparison

Feature onion ono
Definition cebola pronome pessoal neutro do caso nominativo da terceira pessoa do singular

Letter map: onion vs ono

Shared letters muted; letters that set onion and ono apart highlighted. Shared run: 3.

5 ch
onion
3 ch
ono

Grammar separator: onion vs ono

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: onion is anoun and onoapronoun. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 82951, derived from the frequency rank of both members and their visual similarity.

onion is recorded at frequency rank #45,507, classified as anoun, pronounced /ˈʌnjən/. ono is at rank #37,444, tagged as apron.

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 82951, this pair ranks #964 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of onion vs ono

Shared letters: no. Private to "onion": i. Private to "ono": -.

"onion" · 5 letters · shape VCVVC  ·  "ono" · 3 letters · shape VCV

Known mistypes of this pair

  • onionnoion · oinon · onino · onionn · onnion · onoin

Frequently Asked Questions

Can "onion" and "ono" be used interchangeably?
No - they are not even the same part of speech. "onion" is a noun and "ono" a pronoun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "onion" or "ono"?
"ono" is the more common of the two: it sits at frequency rank #37,444 in our Portuguese list, against #45,507 for "onion". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

You've compared "onion" and "ono". Here's where to go from here.

  • Full dictionary entry for "onion" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ono" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #964 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "onion" and "ono" also get mixed up with nearby pairs, the highest-scored neighbour is "oni vs onion". 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 #964 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