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. |
Letter map: koji vs kool
Shared letters muted; letters that set koji and kool apart highlighted. Shared run: 2. koji (CVCV) and kool (CVVC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Part-of-speech tell for koji / kool
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
Frequently Asked Questions
Can "koji" and "kool" be used interchangeably?
In ordinary English text, does "koji" or "kool" show up more?
After this comparison
You've compared "koji" and "kool". Here's where to go from here.
- Full dictionary entry for "koji" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "kool" - compare definitions side by side with the headword page. Word entry
- This pair ranks #66,785 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "koji" and "kool" also get mixed up with nearby pairs, the highest-scored neighbour is "koji vs Kop". 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 #66,785 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.