mil vs mol, What's the Difference?

Which to use

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

#379
“mil” frequency rank: #40,405
“mol” frequency rank: 40784
confusion score

Side-by-Side Comparison

Feature	mil	mol
Definition	Diez veces ciento.	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.

Where the spellings diverge

Shared letters are muted; the letters that actually set mil and mol apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.

3 ch

mil

3 ch

mol

Spelling & Dictionary Insight

mil and mol form a confusable pair in the Spanish index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They differ by a single letter - i in “mil” becomes o in “mol” - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 40784, derived from the frequency rank of both members and their visual similarity.

mil is recorded at frequency rank #379, classified as anadj, pronounced [ˈmil]. mol is at rank #40,405, tagged as anoun, pronounced [ˈmol].

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 40784, this pair ranks #157,236 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Frequency comparison

mil#379

mol#40,405

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "mil" and "mol" be used interchangeably?

No, "mil" and "mol" have distinct meanings and cannot be swapped without changing the meaning of a sentence. Understanding the specific definition and context for each word is essential for correct usage.

Remembering mil vs mol

The fastest way to pick the right one every time.

Check the role first: if you need an adjective, it's “mil”; for a noun, it's “mol”.
See each word in full, definition, IPA, etymology and its other confusables. Full “mil” entry
Browse more pairs most likely to be confused. Most confusable