Which to use
“prime” is an adjective and “pyrite” is a noun - they look or sound alike but fill different roles in a sentence.
- #1,642
- “prime” frequency rank
- #49,574
- “pyrite” frequency rank
- 51216
- confusion score
Side-by-Side Comparison
| Feature | prime | pyrite |
|---|---|---|
| Definition | First in importance, degree, or rank. | The common mineral iron disulfide (FeS₂), of a pale brass-yellow color and brilliant metallic luster, crystallizing in the isometric system. |
Where the eye mixes prime and pyrite
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. prime runs 5 letters (CCVCV) against pyrite's 6 (CVCVCV) - the length gap alone is often enough to separate them once you know to check it.
Look-alike desk: prime vs pyrite
These two trip readers on the page rather than in the ear: prime is /pɹaɪ̯m/ while pyrite is /ˈpaɪˌɹaɪt/. 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 51216, derived from the frequency rank of both members and their visual similarity.
prime is recorded at frequency rank #1,642, classified as anadj, pronounced /pɹaɪ̯m/. pyrite is at rank #49,574, tagged as anoun, pronounced /ˈpaɪˌɹaɪt/.
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 51216, this pair ranks #167,357 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of prime vs pyrite
Shared letters: eipr. Private to "prime": m. Private to "pyrite": ty.
"prime" · 5 letters · shape CCVCV · "pyrite" · 6 letters · shape CVCVCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "prime" for "pyrite" ever safe?
Which is more common, "prime" or "pyrite"?
Useful next steps
Eye-level mix-up between "prime" and "pyrite" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "prime" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "pyrite" - compare definitions side by side with the headword page. Word entry
- This pair ranks #167,357 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "prime" and "pyrite" also get mixed up with nearby pairs, the highest-scored neighbour is "pyre vs pyrite". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #167,357 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.