Which to use
“pis” is a noun and “pro” is a preposition - they look or sound alike but fill different roles in a sentence.
- #19,527
- “pis” frequency rank
- #1,421
- “pro” frequency rank
- 20948
- confusion score
Side-by-Side Comparison
| Feature | pis | pro |
|---|---|---|
| Definition | Secreción líquida de los riñones, conducida a la vejiga por los uréteres y expelida por la uretra. | Úsase para indicar el beneficiario de una acción o iniciativa. |
Where the eye mixes pis and pro
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between pis and pro
These two trip readers on the page rather than in the ear: pis is [ˈpis] while pro is [ˈpɾo]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs preposition), which is usually the fastest check. Our composite confusion score for this pair is 20948, derived from the frequency rank of both members and their visual similarity.
pis is recorded at frequency rank #19,527, classified as anoun, pronounced [ˈpis]. pro is at rank #1,421, tagged as aprep, pronounced [ˈpɾo].
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 20948, this pair ranks #257,062 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of pis vs pro
Shared letters: p. Private to "pis": is. Private to "pro": or.
"pis" · 3 letters · shape CVC · "pro" · 3 letters · shape CCV
Frequently Asked Questions
Do "pis" and "pro" mean the same thing in a sentence?
Frequency check: "pis" vs "pro" - which ranks higher?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "pis" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "pro" - compare definitions side by side with the headword page. Word entry
- This pair ranks #257,062 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "pis" and "pro" also get mixed up with nearby pairs, the highest-scored neighbour is "pis vs PRC". Nearby pair
Confusion rank #257,062 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.