moldvsmopWhat's the difference?

Which to use

“mold” and “mop” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#10,089
“mold” frequency rank
#17,422
“mop” frequency rank
27511
confusion score

Side-by-Side Comparison

Feature mold mop
Definition A hollow form or matrix for shaping a fluid or plastic substance. An implement for washing floors or similar, made of a piece of cloth, or a collection of thrums, or coarse yarn, fastened to a handle.

Where the eye mixes mold and mop

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
mold
3 ch
mop

Visual trap between mold and mop

A purely visual mix-up. mold (/məʊld/) and mop (/mɒp/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 27511, 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/. mop is at rank #17,422, tagged as anoun, pronounced /mɒp/.

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 27511, this pair ranks #378,355 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of mold vs mop

Shared letters: mo. Private to "mold": dl. Private to "mop": p.

"mold" · 4 letters · shape CVCC  ·  "mop" · 3 letters · shape CVC

Known mistypes of this pair

  • moldmlod · mmold · modl · moldd · molld · omld

Frequently Asked Questions

Do "mold" and "mop" mean the same thing in a sentence?
No. They are said differently (/məʊld/ versus /mɒp/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary English text, does "mold" or "mop" show up more?
"mold" is the more common of the two: it sits at frequency rank #10,089 in our English list, against #17,422 for "mop". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "mold" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "mop" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #378,355 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "mold" and "mop" also get mixed up with nearby pairs, the highest-scored neighbour is "Moog vs mop". 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 #378,355 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list