marshvsmassWhich spelling fits?

Which to use

“marsh” and “mass” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#33,706
“marsh” frequency rank
#15,896
“mass” frequency rank
49602
confusion score

Side-by-Side Comparison

Feature marsh mass
Definition Pantano, ciénaga. Masa.

Where the eye mixes marsh and mass

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
marsh
4 ch
mass

Visual trap between marsh and mass

A purely visual mix-up. marsh (/mɑɹʃ/) and mass (/mæs/) 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 49602, derived from the frequency rank of both members and their visual similarity.

marsh is recorded at frequency rank #33,706, classified as anoun, pronounced /mɑɹʃ/. mass is at rank #15,896, tagged as anoun, pronounced /mæs/.

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 49602, this pair ranks #107,890 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of marsh vs mass

Shared letters: ams. Private to "marsh": hr. Private to "mass": -.

"marsh" · 5 letters · shape CVCCC  ·  "mass" · 4 letters · shape CVCC

Known mistypes of this pair

  • marshamrsh · marhs · marrsh · marshh · marssh · masrh · mmarsh · mrash
  • massamss · mas · mmass · msas

Frequently Asked Questions

Is swapping "marsh" for "mass" ever safe?
No. They are said differently (/mɑɹʃ/ versus /mæs/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary Spanish text, does "marsh" or "mass" show up more?
"mass" is the more common of the two: it sits at frequency rank #15,896 in our Spanish list, against #33,706 for "marsh". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

  • Full dictionary entry for "marsh" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "mass" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #107,890 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "marsh" and "mass" also get mixed up with nearby pairs, the highest-scored neighbour is "marsh vs math". 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 #107,890 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list