Which to use
“Petr” is a name and “Petrus” is a noun - they look or sound alike but fill different roles in a sentence.
- #39,455
- “Petr” frequency rank
- #40,419
- “Petrus” frequency rank
- 79874
- confusion score
Side-by-Side Comparison
| Feature | Petr | Petrus |
|---|---|---|
| Definition | Prénom tchèque, équivalent de Pierre. | Pierre. |
Where the spellings diverge
Shared letters are muted; the letters that actually set Petr and Petrus apart are highlighted. They share 4 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Petr is aname and Petrusanoun. On the page they differ by 2 extra letter(s) - “Petr” sits inside “Petrus”. Our composite confusion score for this pair is 79874, derived from the frequency rank of both members and their visual similarity.
Petr is recorded at frequency rank #39,455, classified as aname, pronounced \pɛtr̩\. Petrus is at rank #40,419, tagged as anoun.
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 79874, this pair ranks #22,268 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of Petr vs Petrus
Shared letters: eprt. Private to "Petr": -. Private to "Petrus": su.
"Petr" · 4 letters · shape CVCC · "Petrus" · 6 letters · shape CVCCVC
Known mistypes of this pair
Frequency comparison
Frequently Asked Questions
Can "Petr" and "Petrus" be used interchangeably?
Which is more common, "Petr" or "Petrus"?
Remembering Petr vs Petrus
The fastest way to pick the right one every time.
- Check the role first: if you need a name, it's “Petr”; for a noun, it's “Petrus”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “Petr” entry
- Browse more pairs most likely to be confused. Most confusable