Which to use
“who” is a pronoun and “wo” is an adverb - they look or sound alike but fill different roles in a sentence.
- #12,075
- “who” frequency rank
- #30,301
- “wo” frequency rank
- 42376
- confusion score
Side-by-Side Comparison
| Feature | who | wo |
|---|---|---|
| Definition | Quién. | Dónde. |
Where the spellings diverge
Shared letters are muted; the letters that actually set who and wo apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
These two trip readers on the page rather than in the ear: who is /huː/ while wo is [voː]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (pronoun vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 42376, derived from the frequency rank of both members and their visual similarity.
who is recorded at frequency rank #12,075, classified as apron, pronounced /huː/. wo is at rank #30,301, tagged as anadv, pronounced [voː].
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 42376, this pair ranks #148,570 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of who vs wo
Shared letters: ow. Private to "who": h. Private to "wo": -.
"who" · 3 letters · shape CCV · "wo" · 2 letters · shape CV
Frequency comparison
Frequently Asked Questions
Can "who" and "wo" be used interchangeably?
Which is more common, "who" or "wo"?
Remembering who vs wo
The fastest way to pick the right one every time.
- Check the role first: if you need a pronoun, it's “who”; for an adverb, it's “wo”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “who” entry
- Browse more pairs most likely to be confused. Most confusable