Which to use
“koji” is a noun and “kool” is a verb - they look or sound alike but fill different roles in a sentence.
- #46,016
- “koji” frequency rank
- #20,684
- “kool” frequency rank
- 66700
- confusion score
Side-by-Side Comparison
| Feature | koji | kool |
|---|---|---|
| Definition | A substance that is produced by letting a mold, especially Aspergillus oryzae, grow on rice, barley, soybeans, etc., used to make fermented products such as sake, amazake, miso, and soy sauce. | To look; to pay attention to with one’s eyes. |
Where the spellings diverge
Shared letters are muted; the letters that actually set koji and kool apart are highlighted. They share 2 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: koji is anoun and koolaverb. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 66700, derived from the frequency rank of both members and their visual similarity.
koji is recorded at frequency rank #46,016, classified as anoun, pronounced /ˈkoʊd͡ʒi/. kool is at rank #20,684, tagged as averb.
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 66700, this pair ranks #66,785 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of koji vs kool
Shared letters: ko. Private to "koji": ij. Private to "kool": l.
"koji" · 4 letters · shape CVCV · "kool" · 4 letters · shape CVVC
Known mistypes of this pair
Frequency comparison
Frequently Asked Questions
Can "koji" and "kool" be used interchangeably?
Which is more common, "koji" or "kool"?
Remembering koji vs kool
The fastest way to pick the right one every time.
- Check the role first: if you need a noun, it's “koji”; for a verb, it's “kool”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “koji” entry
- Browse more pairs most likely to be confused. Most confusable