Which to use
“moby” is a noun and “moldy” is an adjective - they look or sound alike but fill different roles in a sentence.
- #28,998
- “moby” frequency rank
- #42,277
- “moldy” frequency rank
- 71275
- confusion score
Side-by-Side Comparison
| Feature | moby | moldy |
|---|---|---|
| Definition | A mobile phone. | Covered with mold. |
Letter map: moby vs moldy
Shared letters muted; letters that set moby and moldy apart highlighted. Shared run: 3. moby runs 4 letters (CVCV) against moldy's 5 (CVCCV) - the length gap alone is often enough to separate them once you know to check it.
Role in the sentence - moby and moldy
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: moby is anoun and moldyanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 71275, derived from the frequency rank of both members and their visual similarity.
moby is recorded at frequency rank #28,998, classified as anoun. moldy is at rank #42,277, tagged as anadj, pronounced /ˈmoʊldi/.
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 71275, this pair ranks #47,358 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of moby vs moldy
Shared letters: moy. Private to "moby": b. Private to "moldy": dl.
"moby" · 4 letters · shape CVCV · "moldy" · 5 letters · shape CVCCV
Known mistypes of this pair
Frequently Asked Questions
Do "moby" and "moldy" mean the same thing in a sentence?
Which is more common, "moby" or "moldy"?
Useful next steps
Pair "moby" vs "moldy" is on the table, pick a follow-up below.
- Full dictionary entry for "moby" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "moldy" - compare definitions side by side with the headword page. Word entry
- This pair ranks #47,358 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "moby" and "moldy" also get mixed up with nearby pairs, the highest-scored neighbour is "moldy vs mossy". 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 #47,358 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.