Which to use
“perímetro” is a noun and “primero” is a num - they look or sound alike but fill different roles in a sentence.
- #13,979
- “perímetro” frequency rank
- #321
- “primero” frequency rank
- 14300
- confusion score
Side-by-Side Comparison
| Feature | perímetro | primero |
|---|---|---|
| Definition | Contorno de una superficie o de una figura plana y, también, la medida de longitud de este. | Que está antes que todos los demás en una serie ordenada (tiempo, clase, etc.). Ordinal del uno. |
Where the spellings diverge
Shared letters are muted; the letters that actually set perímetro and primero apart are highlighted. They share 6 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: perímetro is [peˈɾimet̪ɾo] while primero is [pɾiˈmeɾo]. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (noun vs num), which is usually the fastest check. Our composite confusion score for this pair is 14300, derived from the frequency rank of both members and their visual similarity.
perímetro is recorded at frequency rank #13,979, classified as anoun, pronounced [peˈɾimet̪ɾo]. primero is at rank #321, tagged as anum, pronounced [pɾiˈmeɾo].
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 14300, this pair ranks #284,640 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of perímetro vs primero
Shared letters: emopr. Private to "perímetro": tí. Private to "primero": i.
"perímetro" · 9 letters · shape CVCVCVCCV · "primero" · 7 letters · shape CCVCVCV
Known mistypes of this pair
- primero ← pirmero · pprimero · priemro · primeor · primerro · primmero · primreo · prmiero
Frequency comparison
Frequently Asked Questions
Can "perímetro" and "primero" be used interchangeably?
Which is more common, "perímetro" or "primero"?
Remembering perímetro vs primero
The fastest way to pick the right one every time.
- Check the role first: if you need a noun, it's “perímetro”; for a num, it's “primero”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “perímetro” entry
- Browse more pairs most likely to be confused. Most confusable