Which to use
“quart” and “quartz” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #28,679
- “quart” frequency rank
- #11,275
- “quartz” frequency rank
- 39954
- confusion score
Side-by-Side Comparison
| Feature | quart | quartz |
|---|---|---|
| Definition | A unit of liquid capacity equal to two pints; one-fourth (quarter) of a gallon. Equivalent to 1.136 liters in the UK and 0.946 liter (liquid quart) or 1.101 liters (dry quart) in the U.S. | The most abundant mineral on the earth's surface, of chemical composition silicon dioxide, SiO₂. It occurs in a variety of forms, both crystalline and amorphous. Found in every environment. |
Where the spellings diverge
Shared letters are muted; the letters that actually set quart and quartz apart are highlighted. They share 5 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
quart and quartz form a confusable pair in the English index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They differ by 1 extra letter(s) - “quart” sits inside “quartz” - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 39954, derived from the frequency rank of both members and their visual similarity.
quart is recorded at frequency rank #28,679, classified as anoun, pronounced /kwɔːt/. quartz is at rank #11,275, tagged as anoun, pronounced /k(w)ɔːts/.
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 39954, this pair ranks #272,009 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Frequency comparison
Frequently Asked Questions
Can "quart" and "quartz" be used interchangeably?
Remembering quart vs quartz
The fastest way to pick the right one every time.
- Read both glosses above and match the meaning you intend, only context separates this pair.
- See each word in full, definition, IPA, etymology and its other confusables. Full “quart” entry
- Browse more pairs most likely to be confused. Most confusable