molvsmolerWhich spelling fits?

Quick tell: mol is a noun, moler is a verb, so they fill different roles in a sentence.

Which to use

“mol” is a noun and “moler” is a verb - they look or sound alike but fill different roles in a sentence.

#40,405
“mol” frequency rank
#32,300
“moler” frequency rank
72705
confusion score

Side-by-Side Comparison

Feature mol moler
Definition Unidad de cantidad de sustancia empleada en el Sistema Internacional de Unidades, definida como la cantidad de sustancia de un sistema que contiene tantos entes elementales como átomos hay en 0,012 kg del nucleído carbono-12, o como la cantidad de una sustancia cuyo peso en gramos equivale a su número atómico. Si se emplea para expresar la cantidad de una sustancia, debe indicarse a qué tipo de unidades corresponde: átomos, moléculas, etc. El número de unidades contenidas está representado por el número de Avogadro. Procesar un material para descomponerlo en pequeñas partes o en polvo.

Where the eye mixes mol and moler

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

3 ch
mol
5 ch
moler

Visual trap between mol and moler

These two trip readers on the page rather than in the ear: mol is [ˈmol] while moler is [moˈleɾ]. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “mol” sits inside “moler”, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 72705, derived from the frequency rank of both members and their visual similarity.

mol is recorded at frequency rank #40,405, classified as anoun, pronounced [ˈmol]. moler is at rank #32,300, tagged as averb, pronounced [moˈleɾ].

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 72705, this pair ranks #24,818 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of mol vs moler

Shared letters: lmo. Private to "mol": -. Private to "moler": er.

"mol" · 3 letters · shape CVC  ·  "moler" · 5 letters · shape CVCVC

Known mistypes of this pair

  • molermloer · mmoler · moelr · molerr · moller · molre · omler

Frequently Asked Questions

Is swapping "mol" for "moler" ever safe?
No - they are not even the same part of speech. "mol" is a noun and "moler" a verb, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "mol" or "moler" show up more?
"moler" is the more common of the two: it sits at frequency rank #32,300 in our Spanish list, against #40,405 for "mol". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "mol" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "moler" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #24,818 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "mol" and "moler" also get mixed up with nearby pairs, the highest-scored neighbour is "mol vs mur". 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 #24,818 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