Which to use
“mold” is a noun and “moon” is a name - they look or sound alike but fill different roles in a sentence.
- #10,089
- “mold” frequency rank
- #2,048
- “moon” frequency rank
- 12137
- confusion score
Side-by-Side Comparison
| Feature | mold | moon |
|---|---|---|
| Definition | A hollow form or matrix for shaping a fluid or plastic substance. | Alternative letter-case form of Moon (“the Earth's only permanent natural satellite”). |
Where the eye mixes mold and moon
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Look-alike desk: mold vs moon
These two trip readers on the page rather than in the ear: mold is /məʊld/ while moon is /muːn/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs name), which is usually the fastest check. Our composite confusion score for this pair is 12137, derived from the frequency rank of both members and their visual similarity.
mold is recorded at frequency rank #10,089, classified as anoun, pronounced /məʊld/. moon is at rank #2,048, tagged as aname, pronounced /muːn/.
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 12137, this pair ranks #483,227 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of mold vs moon
Shared letters: mo. Private to "mold": dl. Private to "moon": n.
"mold" · 4 letters · shape CVCC · "moon" · 4 letters · shape CVVC
Known mistypes of this pair
Frequently Asked Questions
Can "mold" and "moon" be used interchangeably?
Frequency check: "mold" vs "moon" - which ranks higher?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "mold" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "moon" - compare definitions side by side with the headword page. Word entry
- This pair ranks #483,227 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "mold" and "moon" also get mixed up with nearby pairs, the highest-scored neighbour is "mold vs Moog". 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 #483,227 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.