Which to use
“única” is an adjective and “unidad” is a noun - they look or sound alike but fill different roles in a sentence.
- #599
- “única” frequency rank
- #978
- “unidad” frequency rank
- 1577
- confusion score
Side-by-Side Comparison
| Feature | única | unidad |
|---|---|---|
| Definition | Forma del femenino singular de único. | Medida estándar de una cantidad. |
Where the spellings diverge
Shared letters are muted; the letters that actually set única and unidad apart are highlighted. They share 3 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: única is [ˈunika] while unidad is [uniˈð̞að̞]. 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 (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 1577, derived from the frequency rank of both members and their visual similarity.
única is recorded at frequency rank #599, classified as anadj, pronounced [ˈunika]. unidad is at rank #978, tagged as anoun, pronounced [uniˈð̞að̞].
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 1577, this pair ranks #321,801 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of única vs unidad
Shared letters: ain. Private to "única": cú. Private to "unidad": du.
"única" · 5 letters · shape VCVCV · "unidad" · 6 letters · shape VCVCVC
Known mistypes of this pair
- unidad ← nuidad · uindad · undiad · uniadd · unidadd · unidda · uniddad · unnidad
Frequency comparison
Frequently Asked Questions
Can "única" and "unidad" be used interchangeably?
Which is more common, "única" or "unidad"?
Remembering única vs unidad
The fastest way to pick the right one every time.
- Check the role first: if you need an adjective, it's “única”; for a noun, it's “unidad”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “única” entry
- Browse more pairs most likely to be confused. Most confusable